Merge branch 'development' into removeUnusedDeps

* development:
  Temporarily remove installation test
  Fix package.json
  Remove `isPublished` from all CHANGELOG.json filesx
  Now that every version of a package published has a corresponding entry in it's CHANGELOG we no longer need the isPublished flag. Remove it.
  Remove temporary convert_changelog script

# Conflicts:
#	packages/monorepo-scripts/package.json

25 files changed, 178 insertions, 449 deletions

diff --git a/.circleci/config.yml b/.circleci/config.yml
index 615980e88..8e5fd969d 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -183,9 +183,9 @@ workflows:
   main:
     jobs:
       - build
-      - test-installation:
-          requires:
-            - build
+      # - test-installation:
+      #     requires:
+      #       - build
       - test-0xjs:
           requires:
             - build
diff --git a/packages/0x.js/CHANGELOG.json b/packages/0x.js/CHANGELOG.json
index 408f5f16b..fd248ff44 100644
--- a/packages/0x.js/CHANGELOG.json
+++ b/packages/0x.js/CHANGELOG.json
@@ -8,8 +8,7 @@
                 "pr": 485
             }
         ],
-        "timestamp": 1522673609,
-        "isPublished": true
+        "timestamp": 1522673609
     },
     {
         "version": "0.34.0",
@@ -47,8 +46,7 @@
                 "pr": 456
             }
         ],
-        "timestamp": 1521298800,
-        "isPublished": true
+        "timestamp": 1521298800
     },
     {
         "version": "0.33.1",
@@ -57,8 +55,7 @@
                 "note": "Add missing EthersJs typescript typings as dependency"
             }
         ],
-        "timestamp": 1520434800,
-        "isPublished": true
+        "timestamp": 1520434800
     },
     {
         "version": "0.33.0",
@@ -84,8 +81,7 @@
                 "pr": 429
             }
         ],
-        "timestamp": 1520089200,
-        "isPublished": true
+        "timestamp": 1520089200
     },
     {
         "version": "0.32.2",
@@ -95,8 +91,7 @@
                 "pr": 389
             }
         ],
-        "timestamp": 1518102000,
-        "isPublished": true
+        "timestamp": 1518102000
     },
     {
         "version": "0.32.1",
@@ -110,8 +105,7 @@
                 "pr": 371
             }
         ],
-        "timestamp": 1517929200,
-        "isPublished": true
+        "timestamp": 1517929200
     },
     {
         "version": "0.32.0",
@@ -126,8 +120,7 @@
                 "pr": 366
             }
         ],
-        "timestamp": 1517756400,
-        "isPublished": true
+        "timestamp": 1517756400
     },
     {
         "version": "0.31.1",
@@ -137,8 +130,7 @@
                 "pr": 357
             }
         ],
-        "timestamp": 1517410800,
-        "isPublished": true
+        "timestamp": 1517410800
     },
     {
         "version": "0.31.0",
@@ -149,8 +141,7 @@
                 "pr": 349
             }
         ],
-        "timestamp": 1517238000,
-        "isPublished": true
+        "timestamp": 1517238000
     },
     {
         "version": "0.30.2",
@@ -163,8 +154,7 @@
                 "note": "Move @0xproject/types to dependencies from devDependencies fixing missing type errors"
             }
         ],
-        "timestamp": 1517151600,
-        "isPublished": true
+        "timestamp": 1517151600
     },
     {
         "version": "0.30.1",
@@ -178,8 +168,7 @@
                 "pr": 341
             }
         ],
-        "timestamp": 1516719600,
-        "isPublished": true
+        "timestamp": 1516719600
     },
     {
         "version": "0.30.0",
@@ -198,8 +187,7 @@
                 "pr": 321
             }
         ],
-        "timestamp": 1516114800,
-        "isPublished": true
+        "timestamp": 1516114800
     },
     {
         "version": "0.29.1",
@@ -209,8 +197,7 @@
                 "pr": 305
             }
         ],
-        "timestamp": 1515596400,
-        "isPublished": true
+        "timestamp": 1515596400
     },
     {
         "version": "0.29.0",
@@ -224,8 +211,7 @@
                 "pr": 287
             }
         ],
-        "timestamp": 1514386800,
-        "isPublished": true
+        "timestamp": 1514386800
     },
     {
         "version": "0.28.0",
@@ -271,8 +257,7 @@
                 "pr": 278
             }
         ],
-        "timestamp": 1513695600,
-        "isPublished": true
+        "timestamp": 1513695600
     },
     {
         "version": "0.27.1",
@@ -281,8 +266,7 @@
                 "note": "Export `TransactionOpts` type"
             }
         ],
-        "timestamp": 1511794800,
-        "isPublished": true
+        "timestamp": 1511794800
     },
     {
         "version": "0.27.0",
@@ -327,8 +311,7 @@
                 "pr": 236
             }
         ],
-        "timestamp": 1511794800,
-        "isPublished": true
+        "timestamp": 1511794800
     },
     {
         "version": "0.26.0",
@@ -348,8 +331,7 @@
                 "pr": 225
             }
         ],
-        "timestamp": 1511190000,
-        "isPublished": true
+        "timestamp": 1511190000
     },
     {
         "version": "0.25.1",
@@ -368,8 +350,7 @@
                 "pr": 200
             }
         ],
-        "timestamp": 1510498800,
-        "isPublished": true
+        "timestamp": 1510498800
     },
     {
         "version": "0.23.0",
@@ -382,8 +363,7 @@
                 "note": "Subscribe callbacks now receive an error object as their first argument"
             }
         ],
-        "timestamp": 1510412400,
-        "isPublished": true
+        "timestamp": 1510412400
     },
     {
         "version": "0.22.6",
@@ -393,8 +373,7 @@
                 "pr": 206
             }
         ],
-        "timestamp": 1510239600,
-        "isPublished": true
+        "timestamp": 1510239600
     },
     {
         "version": "0.22.5",
@@ -403,8 +382,7 @@
                 "note": "Re-publish v0.22.4 to fix publishing issue"
             }
         ],
-        "timestamp": 1509980400,
-        "isPublished": true
+        "timestamp": 1509980400
     },
     {
         "version": "0.22.4",
@@ -413,8 +391,7 @@
                 "note": "Upgraded bignumber.js to a new version that ships with native typings"
             }
         ],
-        "timestamp": 1508857200,
-        "isPublished": true
+        "timestamp": 1508857200
     },
     {
         "version": "0.22.3",
@@ -424,8 +401,7 @@
                 "pr": 199
             }
         ],
-        "timestamp": 1508857200,
-        "isPublished": true
+        "timestamp": 1508857200
     },
     {
         "version": "0.22.2",
@@ -435,8 +411,7 @@
                 "pr": 197
             }
         ],
-        "timestamp": 1508770800,
-        "isPublished": true
+        "timestamp": 1508770800
     },
     {
         "version": "0.22.0",
@@ -451,8 +426,7 @@
                 "pr": 187
             }
         ],
-        "timestamp": 1508079600,
-        "isPublished": true
+        "timestamp": 1508079600
     },
     {
         "version": "0.21.4",
@@ -463,8 +437,7 @@
                 "pr": 194
             }
         ],
-        "timestamp": 1507820400,
-        "isPublished": true
+        "timestamp": 1507820400
     },
     {
         "version": "0.21.3",
@@ -474,8 +447,7 @@
                 "pr": 193
             }
         ],
-        "timestamp": 1507734000,
-        "isPublished": true
+        "timestamp": 1507734000
     },
     {
         "version": "0.21.2",
@@ -485,8 +457,7 @@
                 "pr": 190
             }
         ],
-        "timestamp": 1507647600,
-        "isPublished": true
+        "timestamp": 1507647600
     },
     {
         "version": "0.21.1",
@@ -496,8 +467,7 @@
                 "pr": 189
             }
         ],
-        "timestamp": 1507647600,
-        "isPublished": true
+        "timestamp": 1507647600
     },
     {
         "version": "0.21.0",
@@ -543,8 +513,7 @@
                 "pr": 185
             }
         ],
-        "timestamp": 1507561200,
-        "isPublished": true
+        "timestamp": 1507561200
     },
     {
         "version": "0.20.0",
@@ -562,8 +531,7 @@
                 "pr": 181
             }
         ],
-        "timestamp": 1507129200,
-        "isPublished": true
+        "timestamp": 1507129200
     },
     {
         "version": "0.19.0",
@@ -581,8 +549,7 @@
                 "pr": 175
             }
         ],
-        "timestamp": 1506610800,
-        "isPublished": true
+        "timestamp": 1506610800
     },
     {
         "version": "0.18.0",
@@ -592,8 +559,7 @@
                 "pr": 170
             }
         ],
-        "timestamp": 1506351600,
-        "isPublished": true
+        "timestamp": 1506351600
     },
     {
         "version": "0.17.0",
@@ -603,8 +569,7 @@
                 "pr": 171
             }
         ],
-        "timestamp": 1506351600,
-        "isPublished": true
+        "timestamp": 1506351600
     },
     {
         "version": "0.16.0",
@@ -627,8 +592,7 @@
                 "pr": 165
             }
         ],
-        "timestamp": 1505833200,
-        "isPublished": true
+        "timestamp": 1505833200
     },
     {
         "version": "0.15.0",
@@ -639,8 +603,7 @@
                 "pr": 161
             }
         ],
-        "timestamp": 1504796400,
-        "isPublished": true
+        "timestamp": 1504796400
     },
     {
         "version": "0.14.2",
@@ -650,8 +613,7 @@
                 "pr": 160
             }
         ],
-        "timestamp": 1504710000,
-        "isPublished": true
+        "timestamp": 1504710000
     },
     {
         "version": "0.14.1",
@@ -661,8 +623,7 @@
                 "pr": 159
             }
         ],
-        "timestamp": 1504710000,
-        "isPublished": true
+        "timestamp": 1504710000
     },
     {
         "version": "0.14.0",
@@ -680,8 +641,7 @@
                 "pr": 157
             }
         ],
-        "timestamp": 1504623600,
-        "isPublished": true
+        "timestamp": 1504623600
     },
     {
         "version": "0.13.0",
@@ -705,8 +665,7 @@
                 "pr": 152
             }
         ],
-        "timestamp": 1504623600,
-        "isPublished": true
+        "timestamp": 1504623600
     },
     {
         "version": "0.12.1",
@@ -724,8 +683,7 @@
                 "pr": 139
             }
         ],
-        "timestamp": 1504278000,
-        "isPublished": true
+        "timestamp": 1504278000
     },
     {
         "version": "0.11.0",
@@ -743,8 +701,7 @@
                 "pr": 137
             }
         ],
-        "timestamp": 1503500400,
-        "isPublished": true
+        "timestamp": 1503500400
     },
     {
         "version": "0.10.4",
@@ -754,8 +711,7 @@
                 "pr": 135
             }
         ],
-        "timestamp": 1503500400,
-        "isPublished": true
+        "timestamp": 1503500400
     },
     {
         "version": "0.10.1",
@@ -809,8 +765,7 @@
                 "pr": 127
             }
         ],
-        "timestamp": 1503500400,
-        "isPublished": true
+        "timestamp": 1503500400
     },
     {
         "version": "0.9.3",
@@ -820,8 +775,7 @@
                 "pr": 118
             }
         ],
-        "timestamp": 1503327600,
-        "isPublished": true
+        "timestamp": 1503327600
     },
     {
         "version": "0.9.2",
@@ -834,8 +788,7 @@
                 "pr": 118
             }
         ],
-        "timestamp": 1503241200,
-        "isPublished": true
+        "timestamp": 1503241200
     },
     {
         "version": "0.9.1",
@@ -845,8 +798,7 @@
                 "pr": 120
             }
         ],
-        "timestamp": 1502809200,
-        "isPublished": true
+        "timestamp": 1502809200
     },
     {
         "version": "0.9.0",
@@ -883,8 +835,7 @@
                 "pr": 109
             }
         ],
-        "timestamp": 1500994800,
-        "isPublished": true
+        "timestamp": 1500994800
     },
     {
         "version": "0.8.0",
@@ -926,8 +877,7 @@
                 "note": "Fixed the bug where `zeroEx.setProviderAsync` didn't invalidate etherToken contract's instance"
             }
         ],
-        "timestamp": 1499094000,
-        "isPublished": true
+        "timestamp": 1499094000
     },
     {
         "version": "0.7.1",
@@ -938,8 +888,7 @@
                 "pr": 81
             }
         ],
-        "timestamp": 1498402800,
-        "isPublished": true
+        "timestamp": 1498402800
     },
     {
         "version": "0.7.0",
@@ -961,8 +910,7 @@
                     "Renamed type `LogCancelArgs` to `LogCancelContractEventArgs` and `LogFillArgs` to `LogFillContractEventArgs`"
             }
         ],
-        "timestamp": 1498057200,
-        "isPublished": true
+        "timestamp": 1498057200
     },
     {
         "version": "0.6.2",
@@ -974,8 +922,7 @@
                 "note": "Improved documentation"
             }
         ],
-        "timestamp": 1497970800,
-        "isPublished": true
+        "timestamp": 1497970800
     },
     {
         "version": "0.6.1",
@@ -984,8 +931,7 @@
                 "note": "Improved documentation"
             }
         ],
-        "timestamp": 1497798000,
-        "isPublished": true
+        "timestamp": 1497798000
     },
     {
         "version": "0.6.0",
@@ -997,8 +943,7 @@
                 "note": "Added types for contract event arguments"
             }
         ],
-        "timestamp": 1497798000,
-        "isPublished": true
+        "timestamp": 1497798000
     },
     {
         "version": "0.5.2",
@@ -1008,8 +953,7 @@
                     "Fixed the bug in `postpublish` script that caused that only unminified UMD bundle was uploaded to release page"
             }
         ],
-        "timestamp": 1497452400,
-        "isPublished": true
+        "timestamp": 1497452400
     },
     {
         "version": "0.5.1",
@@ -1018,7 +962,6 @@
                 "note": "Added `postpublish` script to publish to Github Releases with assets."
             }
         ],
-        "timestamp": 1497452400,
-        "isPublished": true
+        "timestamp": 1497452400
     }
 ]
diff --git a/packages/abi-gen/CHANGELOG.json b/packages/abi-gen/CHANGELOG.json
index 42dd06f0b..e720cc04b 100644
--- a/packages/abi-gen/CHANGELOG.json
+++ b/packages/abi-gen/CHANGELOG.json
@@ -6,8 +6,7 @@
             {
                 "note": "Dependencies updated"
             }
-        ],
-        "isPublished": true
+        ]
     },
     {
         "timestamp": 1522658513,
@@ -16,8 +15,7 @@
             {
                 "note": "Dependencies updated"
             }
-        ],
-        "isPublished": true
+        ]
     },
     {
         "version": "0.2.5",
@@ -27,8 +25,7 @@
                 "pr": 452
             }
         ],
-        "timestamp": 1521298800,
-        "isPublished": true
+        "timestamp": 1521298800
     },
     {
         "version": "0.2.4",
@@ -48,8 +45,7 @@
                 "pr": 413
             }
         ],
-        "timestamp": 1520089200,
-        "isPublished": true
+        "timestamp": 1520089200
     },
     {
         "version": "0.2.1",
@@ -59,8 +55,7 @@
                 "pr": 389
             }
         ],
-        "timestamp": 1518102000,
-        "isPublished": true
+        "timestamp": 1518102000
     },
     {
         "version": "0.2.0",
@@ -75,8 +70,7 @@
                 "pr": 388
             }
         ],
-        "timestamp": 1517929200,
-        "isPublished": true
+        "timestamp": 1517929200
     },
     {
         "version": "0.1.0",
@@ -94,7 +88,6 @@
                 "pr": 304
             }
         ],
-        "timestamp": 1515596400,
-        "isPublished": true
+        "timestamp": 1515596400
     }
 ]
diff --git a/packages/assert/CHANGELOG.json b/packages/assert/CHANGELOG.json
index 7e38b6b39..717b803af 100644
--- a/packages/assert/CHANGELOG.json
+++ b/packages/assert/CHANGELOG.json
@@ -6,8 +6,7 @@
             {
                 "note": "Dependencies updated"
             }
-        ],
-        "isPublished": true
+        ]
     },
     {
         "timestamp": 1522658513,
@@ -16,8 +15,7 @@
             {
                 "note": "Dependencies updated"
             }
-        ],
-        "isPublished": true
+        ]
     },
     {
         "version": "0.2.0",
@@ -27,8 +25,7 @@
                 "pr": 412
             }
         ],
-        "timestamp": 1520434800,
-        "isPublished": true
+        "timestamp": 1520434800
     },
     {
         "version": "0.1.0",
@@ -42,8 +39,7 @@
                 "pr": 385
             }
         ],
-        "timestamp": 1520089200,
-        "isPublished": true
+        "timestamp": 1520089200
     },
     {
         "version": "0.0.18",
@@ -53,8 +49,7 @@
                 "pr": 389
             }
         ],
-        "timestamp": 1486566000,
-        "isPublished": true
+        "timestamp": 1486566000
     },
     {
         "version": "0.0.4",
@@ -67,7 +62,6 @@
                     "Added assertion isValidBaseUnitAmount which checks both that the value is a valid bigNumber and that it does not contain decimals."
             }
         ],
-        "timestamp": 1510585200,
-        "isPublished": true
+        "timestamp": 1510585200
     }
 ]
diff --git a/packages/base-contract/CHANGELOG.json b/packages/base-contract/CHANGELOG.json
index 003598c93..bb7cf261f 100644
--- a/packages/base-contract/CHANGELOG.json
+++ b/packages/base-contract/CHANGELOG.json
@@ -24,8 +24,7 @@
             {
                 "note": "Dependencies updated"
             }
-        ],
-        "isPublished": true
+        ]
     },
     {
         "version": "0.0.2",
@@ -34,7 +33,6 @@
                 "note": "Initial release"
             }
         ],
-        "timestamp": 1520089200,
-        "isPublished": true
+        "timestamp": 1520089200
     }
 ]
diff --git a/packages/connect/CHANGELOG.json b/packages/connect/CHANGELOG.json
index 5e6d6629e..239dd23a4 100644
--- a/packages/connect/CHANGELOG.json
+++ b/packages/connect/CHANGELOG.json
@@ -6,8 +6,7 @@
             {
                 "note": "Dependencies updated"
             }
-        ],
-        "isPublished": true
+        ]
     },
     {
         "timestamp": 1522658513,
@@ -16,8 +15,7 @@
             {
                 "note": "Dependencies updated"
             }
-        ],
-        "isPublished": true
+        ]
     },
     {
         "version": "0.6.4",
@@ -27,8 +25,7 @@
                 "pr": 456
             }
         ],
-        "timestamp": 1521298800,
-        "isPublished": true
+        "timestamp": 1521298800
     },
     {
         "version": "0.6.2",
@@ -38,8 +35,7 @@
                 "pr": 407
             }
         ],
-        "timestamp": 1518706800,
-        "isPublished": true
+        "timestamp": 1518706800
     },
     {
         "version": "0.6.0",
@@ -53,8 +49,7 @@
                 "pr": 406
             }
         ],
-        "timestamp": 1518706800,
-        "isPublished": true
+        "timestamp": 1518706800
     },
     {
         "version": "0.5.7",
@@ -64,8 +59,7 @@
                 "pr": 389
             }
         ],
-        "timestamp": 1518102000,
-        "isPublished": true
+        "timestamp": 1518102000
     },
     {
         "version": "0.5.0",
@@ -83,8 +77,7 @@
                 "pr": 318
             }
         ],
-        "timestamp": 1516114800,
-        "isPublished": true
+        "timestamp": 1516114800
     },
     {
         "version": "0.4.0",
@@ -94,8 +87,7 @@
                 "pr": 296
             }
         ],
-        "timestamp": 1515596400,
-        "isPublished": true
+        "timestamp": 1515596400
     },
     {
         "version": "0.3.0",
@@ -109,8 +101,7 @@
                 "pr": 256
             }
         ],
-        "timestamp": 1512658800,
-        "isPublished": true
+        "timestamp": 1512658800
     },
     {
         "version": "0.2.0",
@@ -125,8 +116,7 @@
                 "note": "Remove dependency on 0x.js"
             }
         ],
-        "timestamp": 1511881200,
-        "isPublished": true
+        "timestamp": 1511881200
     },
     {
         "version": "0.1.0",
@@ -135,7 +125,6 @@
                 "note": "Provide a HttpClient class for interacting with standard relayer api compliant HTTP urls"
             }
         ],
-        "timestamp": 1511276400,
-        "isPublished": true
+        "timestamp": 1511276400
     }
 ]
diff --git a/packages/deployer/CHANGELOG.json b/packages/deployer/CHANGELOG.json
index 216defb77..72f35a93d 100644
--- a/packages/deployer/CHANGELOG.json
+++ b/packages/deployer/CHANGELOG.json
@@ -7,8 +7,7 @@
                 "pr": 485
             }
         ],
-        "timestamp": 1522673609,
-        "isPublished": true
+        "timestamp": 1522673609
     },
     {
         "version": "0.3.4",
@@ -18,8 +17,7 @@
                 "pr": 491
             }
         ],
-        "timestamp": 1522658513,
-        "isPublished": true
+        "timestamp": 1522658513
     },
     {
         "version": "0.3.1",
@@ -28,8 +26,7 @@
                 "note": "Add TS types for `yargs`"
             }
         ],
-        "timestamp": 1521298800,
-        "isPublished": true
+        "timestamp": 1521298800
     },
     {
         "version": "0.3.0",
@@ -75,8 +72,7 @@
                 "note": "Add `#!/usr/bin/env node` pragma above `cli.ts` script to fix command-line error."
             }
         ],
-        "timestamp": 1521298800,
-        "isPublished": true
+        "timestamp": 1521298800
     },
     {
         "version": "0.2.0",
@@ -91,8 +87,7 @@
                 "pr": 419
             }
         ],
-        "timestamp": 1520089200,
-        "isPublished": true
+        "timestamp": 1520089200
     },
     {
         "version": "0.1.0",
@@ -102,8 +97,7 @@
                 "pr": 400
             }
         ],
-        "timestamp": 1518706800,
-        "isPublished": true
+        "timestamp": 1518706800
     },
     {
         "version": "0.0.8",
@@ -113,7 +107,6 @@
                 "pr": 389
             }
         ],
-        "timestamp": 1518102000,
-        "isPublished": true
+        "timestamp": 1518102000
     }
 ]
diff --git a/packages/dev-utils/CHANGELOG.json b/packages/dev-utils/CHANGELOG.json
index 9282dc91e..64ef4b000 100644
--- a/packages/dev-utils/CHANGELOG.json
+++ b/packages/dev-utils/CHANGELOG.json
@@ -6,8 +6,7 @@
             {
                 "note": "Dependencies updated"
             }
-        ],
-        "isPublished": true
+        ]
     },
     {
         "timestamp": 1522658513,
@@ -16,8 +15,7 @@
             {
                 "note": "Dependencies updated"
             }
-        ],
-        "isPublished": true
+        ]
     },
     {
         "version": "0.3.1",
@@ -29,8 +27,7 @@
                 "note": "Move `@0xproject/web3_wrapper` to dependencies from devDependencies."
             }
         ],
-        "timestamp": 1521298800,
-        "isPublished": true
+        "timestamp": 1521298800
     },
     {
         "version": "0.3.0",
@@ -48,8 +45,7 @@
                 "pr": 426
             }
         ],
-        "timestamp": 1521298800,
-        "isPublished": true
+        "timestamp": 1521298800
     },
     {
         "version": "0.2.0",
@@ -59,8 +55,7 @@
                 "pr": 392
             }
         ],
-        "timestamp": 1518706800,
-        "isPublished": true
+        "timestamp": 1518706800
     },
     {
         "version": "0.0.12",
@@ -70,8 +65,7 @@
                 "pr": 389
             }
         ],
-        "timestamp": 1518102000,
-        "isPublished": true
+        "timestamp": 1518102000
     },
     {
         "version": "0.0.11",
@@ -81,7 +75,6 @@
                 "pr": 352
             }
         ],
-        "timestamp": 1517929200,
-        "isPublished": true
+        "timestamp": 1517929200
     }
 ]
diff --git a/packages/json-schemas/CHANGELOG.json b/packages/json-schemas/CHANGELOG.json
index d5f3d610b..d6360f5d4 100644
--- a/packages/json-schemas/CHANGELOG.json
+++ b/packages/json-schemas/CHANGELOG.json
@@ -6,8 +6,7 @@
             {
                 "note": "Dependencies updated"
             }
-        ],
-        "isPublished": true
+        ]
     },
     {
         "timestamp": 1522658513,
@@ -16,8 +15,7 @@
             {
                 "note": "Dependencies updated"
             }
-        ],
-        "isPublished": true
+        ]
     },
     {
         "version": "0.7.13",
@@ -27,8 +25,7 @@
                 "pr": 389
             }
         ],
-        "timestamp": 1518102000,
-        "isPublished": true
+        "timestamp": 1518102000
     },
     {
         "version": "0.7.0",
@@ -38,8 +35,7 @@
                 "pr": 272
             }
         ],
-        "timestamp": 1513695600,
-        "isPublished": true
+        "timestamp": 1513695600
     },
     {
         "version": "0.6.7",
@@ -48,7 +44,6 @@
                 "note": "Re-publish JSON-schema previously published under NPM package 0x-json-schemas"
             }
         ],
-        "timestamp": 1510585200,
-        "isPublished": true
+        "timestamp": 1510585200
     }
 ]
diff --git a/packages/monorepo-scripts/CHANGELOG.json b/packages/monorepo-scripts/CHANGELOG.json
index fdc3b8cce..05e1ce2a2 100644
--- a/packages/monorepo-scripts/CHANGELOG.json
+++ b/packages/monorepo-scripts/CHANGELOG.json
@@ -15,7 +15,6 @@
                 "note": "Add postpublish utils"
             }
         ],
-        "timestamp": 1521298800,
-        "isPublished": true
+        "timestamp": 1521298800
     }
 ]
diff --git a/packages/monorepo-scripts/package.json b/packages/monorepo-scripts/package.json
index ccdf6ca2e..b113b4b39 100644
--- a/packages/monorepo-scripts/package.json
+++ b/packages/monorepo-scripts/package.json
@@ -10,11 +10,9 @@
         "clean": "shx rm -rf lib",
         "build": "tsc",
         "test:publish": "run-s build script:publish",
-        "convert_changelogs": "run-s build script:convert_changelogs",
         "find_unused_deps": "run-s build script:find_unused_deps",
         "script:deps_versions": "node ./lib/deps_versions.js",
         "script:publish": "IS_DRY_RUN=true node ./lib/publish.js",
-        "script:convert_changelogs": "node ./lib/convert_changelogs.js",
         "script:find_unused_deps": "node ./lib/find_unused_dependencies.js"
     },
     "repository": {
diff --git a/packages/monorepo-scripts/src/convert_changelogs.ts b/packages/monorepo-scripts/src/convert_changelogs.ts
deleted file mode 100644
index b5be14ed8..000000000
--- a/packages/monorepo-scripts/src/convert_changelogs.ts
+++ /dev/null
@@ -1,99 +0,0 @@
-#!/usr/bin/env node
-/**
- * TEMPORARY SCRIPT
- * This script exists to migrate the legacy CHANGELOG.md to the canonical CHANGELOG.md
- * TODO: Remove after migration is successful and committed.
- */
-
-import * as fs from 'fs';
-import lernaGetPackages = require('lerna-get-packages');
-import * as _ from 'lodash';
-import * as moment from 'moment';
-import * as path from 'path';
-import { exec as execAsync } from 'promisify-child-process';
-
-import { constants } from './constants';
-import { Changelog, Changes, UpdatedPackage } from './types';
-import { utils } from './utils';
-
-const HEADER_PRAGMA = '##';
-
-(async () => {
-    const allLernaPackages = lernaGetPackages(constants.monorepoRootPath);
-    const publicLernaPackages = _.filter(allLernaPackages, pkg => !pkg.package.private);
-    for (const lernaPackage of publicLernaPackages) {
-        const changelogMdIfExists = getChangelogMdIfExists(lernaPackage.package.name, lernaPackage.location);
-        if (_.isUndefined(changelogMdIfExists)) {
-            throw new Error(`${lernaPackage.package.name} should have CHANGELOG.md b/c it's public. Add one.`);
-        }
-
-        const lines = changelogMdIfExists.split('\n');
-        const changelogs: Changelog[] = [];
-        let changelog: Changelog = {
-            version: '',
-            changes: [],
-        };
-        /**
-         * Example MD entry:
-         * ## v0.3.1 - _March 18, 2018_
-         *
-         *    * Add TS types for `yargs` (#400)
-         */
-        for (const line of lines) {
-            if (_.startsWith(line, `${HEADER_PRAGMA} `)) {
-                let version = line.substr(4).split(' - ')[0];
-                if (version === '0.x.x') {
-                    version = utils.getNextPatchVersion(lernaPackage.package.version);
-                }
-                const dateStr = line.split('_')[1];
-                let date;
-                if (!_.includes(dateStr, 'TBD')) {
-                    date = moment(dateStr, 'MMMM D, YYYY');
-                }
-                changelog = {
-                    version,
-                    changes: [],
-                };
-                if (!_.isUndefined(date)) {
-                    changelog.timestamp = date.unix();
-                }
-                if (!_.includes(dateStr, 'TBD')) {
-                    changelog.isPublished = true;
-                }
-                changelogs.push(changelog);
-            } else if (_.includes(line, '* ')) {
-                const note = line.split('* ')[1].split(' (#')[0];
-                const prChunk = line.split(' (#')[1];
-                let pr;
-                if (!_.isUndefined(prChunk)) {
-                    pr = prChunk.split(')')[0];
-                }
-                const changes: Changes = {
-                    note,
-                };
-                if (!_.isUndefined(pr)) {
-                    changes.pr = _.parseInt(pr);
-                }
-                changelog.changes.push(changes);
-            }
-        }
-        const changelogJSON = JSON.stringify(changelogs, null, 4);
-        const changelogJSONPath = `${lernaPackage.location}/CHANGELOG.json`;
-        fs.writeFileSync(changelogJSONPath, changelogJSON);
-        await utils.prettifyAsync(changelogJSONPath, constants.monorepoRootPath);
-    }
-})().catch(err => {
-    utils.log(err.stdout);
-    process.exit(1);
-});
-
-function getChangelogMdIfExists(packageName: string, location: string): string | undefined {
-    const changelogPath = path.join(location, 'CHANGELOG.md');
-    let changelogMd: string;
-    try {
-        changelogMd = fs.readFileSync(changelogPath, 'utf-8');
-        return changelogMd;
-    } catch (err) {
-        return undefined;
-    }
-}
diff --git a/packages/monorepo-scripts/src/postpublish_utils.ts b/packages/monorepo-scripts/src/postpublish_utils.ts
index 236b54379..ca4c92f5d 100644
--- a/packages/monorepo-scripts/src/postpublish_utils.ts
+++ b/packages/monorepo-scripts/src/postpublish_utils.ts
@@ -91,7 +91,7 @@ export const postpublishUtils = {
         );
     },
     async publishReleaseNotesAsync(cwd: string, packageName: string, version: string, assets: string[]): Promise<void> {
-        const notes = this.getReleaseNotes(packageName);
+        const notes = this.getReleaseNotes(packageName, version);
         const releaseName = this.getReleaseName(packageName, version);
         const tag = this.getTag(packageName, version);
         const finalAssets = this.adjustAssetPaths(cwd, assets);
@@ -109,9 +109,8 @@ export const postpublishUtils = {
             reuseDraftOnly: false,
             assets,
         });
-        this.updateChangelogIsPublished(packageName);
     },
-    getReleaseNotes(packageName: string) {
+    getReleaseNotes(packageName: string, version: string) {
         const packageNameWithNamespace = packageName.replace('@0xproject/', '');
         const changelogJSONPath = path.join(
             constants.monorepoRootPath,
@@ -122,33 +121,20 @@ export const postpublishUtils = {
         const changelogJSON = fs.readFileSync(changelogJSONPath, 'utf-8');
         const changelogs = JSON.parse(changelogJSON);
         const latestLog = changelogs[0];
-        if (_.isUndefined(latestLog.isPublished)) {
-            let notes = '';
-            _.each(latestLog.changes, change => {
-                notes += `* ${change.note}`;
-                if (change.pr) {
-                    notes += ` (${change.pr})`;
-                }
-                notes += `\n`;
-            });
-            return notes;
+        // We sanity check that the version for the changelog notes we are about to publish to Github
+        // correspond to the new version of the package.
+        if (version !== latestLog.version) {
+            throw new Error('Expected CHANGELOG.json latest entry version to coincide with published version.');
         }
-        return 'N/A';
-    },
-    updateChangelogIsPublished(packageName: string) {
-        const packageNameWithNamespace = packageName.replace('@0xproject/', '');
-        const changelogJSONPath = path.join(
-            constants.monorepoRootPath,
-            'packages',
-            packageNameWithNamespace,
-            'CHANGELOG.json',
-        );
-        const changelogJSON = fs.readFileSync(changelogJSONPath, 'utf-8');
-        const changelogs = JSON.parse(changelogJSON);
-        const latestLog = changelogs[0];
-        latestLog.isPublished = true;
-        changelogs[0] = latestLog;
-        fs.writeFileSync(changelogJSONPath, JSON.stringify(changelogs, null, '\t'));
+        let notes = '';
+        _.each(latestLog.changes, change => {
+            notes += `* ${change.note}`;
+            if (change.pr) {
+                notes += ` (${change.pr})`;
+            }
+            notes += `\n`;
+        });
+        return notes;
     },
     getTag(packageName: string, version: string) {
         return `${packageName}@${version}`;
diff --git a/packages/monorepo-scripts/src/publish.ts b/packages/monorepo-scripts/src/publish.ts
index d749ec630..adc1de64a 100644
--- a/packages/monorepo-scripts/src/publish.ts
+++ b/packages/monorepo-scripts/src/publish.ts
@@ -48,7 +48,7 @@ const semverNameToIndex: { [semver: string]: number } = {
         }
 
         const currentVersion = lernaPackage.package.version;
-        const shouldAddNewEntry = shouldAddNewChangelogEntry(changelogs);
+        const shouldAddNewEntry = shouldAddNewChangelogEntry(currentVersion, changelogs);
         if (shouldAddNewEntry) {
             // Create a new entry for a patch version with generic changelog entry.
             const nextPatchVersion = utils.getNextPatchVersion(currentVersion);
@@ -174,12 +174,13 @@ function getChangelogJSONOrCreateIfMissing(packageName: string, changelogPath: s
     }
 }
 
-function shouldAddNewChangelogEntry(changelogs: Changelog[]): boolean {
+function shouldAddNewChangelogEntry(currentVersion: string, changelogs: Changelog[]): boolean {
     if (_.isEmpty(changelogs)) {
         return true;
     }
     const lastEntry = changelogs[0];
-    return !!lastEntry.isPublished;
+    const lastEntryCurrentVersion = lastEntry.version === currentVersion;
+    return lastEntryCurrentVersion;
 }
 
 function generateChangelogMd(changelogs: Changelog[]): string {
diff --git a/packages/monorepo-scripts/src/types.ts b/packages/monorepo-scripts/src/types.ts
index 7adec202f..9e6edd186 100644
--- a/packages/monorepo-scripts/src/types.ts
+++ b/packages/monorepo-scripts/src/types.ts
@@ -13,7 +13,6 @@ export interface Changelog {
     timestamp?: number;
     version: string;
     changes: Changes[];
-    isPublished?: boolean;
 }
 
 export enum SemVerIndex {
diff --git a/packages/react-docs/CHANGELOG.json b/packages/react-docs/CHANGELOG.json
index 5cd8c245f..0a85bb32d 100644
--- a/packages/react-docs/CHANGELOG.json
+++ b/packages/react-docs/CHANGELOG.json
@@ -6,8 +6,7 @@
             {
                 "note": "Dependencies updated"
             }
-        ],
-        "isPublished": true
+        ]
     },
     {
         "version": "0.0.5",
@@ -32,8 +31,7 @@
                 "pr": 465
             }
         ],
-        "timestamp": 1522658513,
-        "isPublished": true
+        "timestamp": 1522658513
     },
     {
         "version": "0.0.3",
@@ -43,8 +41,7 @@
                     "Move TS typings from devDependencies to dependencies since they are needed by the package user."
             }
         ],
-        "timestamp": 1521298800,
-        "isPublished": true
+        "timestamp": 1521298800
     },
     {
         "version": "0.0.2",
@@ -57,7 +54,6 @@
                 "pr": 452
             }
         ],
-        "timestamp": 1521298800,
-        "isPublished": true
+        "timestamp": 1521298800
     }
 ]
diff --git a/packages/react-shared/CHANGELOG.json b/packages/react-shared/CHANGELOG.json
index 218fbd556..858750253 100644
--- a/packages/react-shared/CHANGELOG.json
+++ b/packages/react-shared/CHANGELOG.json
@@ -6,8 +6,7 @@
             {
                 "note": "Dependencies updated"
             }
-        ],
-        "isPublished": true
+        ]
     },
     {
         "version": "0.1.0",
@@ -23,7 +22,6 @@
                 "note": "Reorganized colors and added new ones"
             }
         ],
-        "timestamp": 1522658513,
-        "isPublished": true
+        "timestamp": 1522658513
     }
 ]
diff --git a/packages/sol-cov/CHANGELOG.json b/packages/sol-cov/CHANGELOG.json
index d45e3bfab..e24a264db 100644
--- a/packages/sol-cov/CHANGELOG.json
+++ b/packages/sol-cov/CHANGELOG.json
@@ -6,8 +6,7 @@
             {
                 "note": "Dependencies updated"
             }
-        ],
-        "isPublished": true
+        ]
     },
     {
         "timestamp": 1522658513,
@@ -16,7 +15,6 @@
             {
                 "note": "Dependencies updated"
             }
-        ],
-        "isPublished": true
+        ]
     }
 ]
diff --git a/packages/sra-report/CHANGELOG.json b/packages/sra-report/CHANGELOG.json
index 73e8c7c22..35c849e4e 100644
--- a/packages/sra-report/CHANGELOG.json
+++ b/packages/sra-report/CHANGELOG.json
@@ -6,8 +6,7 @@
             {
                 "note": "Dependencies updated"
             }
-        ],
-        "isPublished": true
+        ]
     },
     {
         "version": "0.0.6",
@@ -17,8 +16,7 @@
                 "pr": 451
             }
         ],
-        "timestamp": 1522658513,
-        "isPublished": true
+        "timestamp": 1522658513
     },
     {
         "version": "0.0.2",
@@ -28,13 +26,11 @@
                 "pr": 452
             }
         ],
-        "timestamp": 1521298800,
-        "isPublished": true
+        "timestamp": 1521298800
     },
     {
         "version": "0.0.1",
         "changes": [],
-        "timestamp": 1520434800,
-        "isPublished": true
+        "timestamp": 1520434800
     }
 ]
diff --git a/packages/subproviders/CHANGELOG.json b/packages/subproviders/CHANGELOG.json
index def8d3feb..54eb32378 100644
--- a/packages/subproviders/CHANGELOG.json
+++ b/packages/subproviders/CHANGELOG.json
@@ -6,8 +6,7 @@
             {
                 "note": "Dependencies updated"
             }
-        ],
-        "isPublished": true
+        ]
     },
     {
         "version": "0.8.3",
@@ -21,8 +20,7 @@
                 "pr": 465
             }
         ],
-        "timestamp": 1522658513,
-        "isPublished": true
+        "timestamp": 1522658513
     },
     {
         "version": "0.8.0",
@@ -43,8 +41,7 @@
                 "note": "Ignore `ganache-core` dependency when using package in a browser environment."
             }
         ],
-        "timestamp": 1521298800,
-        "isPublished": true
+        "timestamp": 1521298800
     },
     {
         "version": "0.7.0",
@@ -55,8 +52,7 @@
                 "pr": 437
             }
         ],
-        "timestamp": 1520434800,
-        "isPublished": true
+        "timestamp": 1520434800
     },
     {
         "version": "0.6.0",
@@ -70,8 +66,7 @@
                 "pr": 432
             }
         ],
-        "timestamp": 1520089200,
-        "isPublished": true
+        "timestamp": 1520089200
     },
     {
         "version": "0.5.0",
@@ -81,8 +76,7 @@
                 "pr": 392
             }
         ],
-        "timestamp": 1518706800,
-        "isPublished": true
+        "timestamp": 1518706800
     },
     {
         "version": "0.4.1",
@@ -92,8 +86,7 @@
                 "pr": 389
             }
         ],
-        "timestamp": 1518102000,
-        "isPublished": true
+        "timestamp": 1518102000
     },
     {
         "version": "0.4.0",
@@ -108,8 +101,7 @@
                 "pr": 363
             }
         ],
-        "timestamp": 1517929200,
-        "isPublished": true
+        "timestamp": 1517929200
     },
     {
         "version": "0.3.6",
@@ -119,8 +111,7 @@
                 "pr": 303
             }
         ],
-        "timestamp": 1517065200,
-        "isPublished": true
+        "timestamp": 1517065200
     },
     {
         "version": "0.3.0",
@@ -129,8 +120,7 @@
                 "note": "Allow LedgerSubprovider to handle `eth_sign` in addition to `personal_sign` RPC requests"
             }
         ],
-        "timestamp": 1514386800,
-        "isPublished": true
+        "timestamp": 1514386800
     },
     {
         "version": "0.2.0",
@@ -140,7 +130,6 @@
                 "pr": 271
             }
         ],
-        "timestamp": 1513695600,
-        "isPublished": true
+        "timestamp": 1513695600
     }
 ]
diff --git a/packages/tslint-config/CHANGELOG.json b/packages/tslint-config/CHANGELOG.json
index 9f34a8c99..363fead6f 100644
--- a/packages/tslint-config/CHANGELOG.json
+++ b/packages/tslint-config/CHANGELOG.json
@@ -6,8 +6,7 @@
             {
                 "note": "Dependencies updated"
             }
-        ],
-        "isPublished": true
+        ]
     },
     {
         "timestamp": 1522658513,
@@ -16,8 +15,7 @@
             {
                 "note": "Dependencies updated"
             }
-        ],
-        "isPublished": true
+        ]
     },
     {
         "version": "0.4.9",
@@ -26,8 +24,7 @@
                 "note": "Move devDeps to deps to fix missed dependency issue in published package."
             }
         ],
-        "timestamp": 1518102000,
-        "isPublished": true
+        "timestamp": 1518102000
     },
     {
         "version": "0.4.8",
@@ -37,8 +34,7 @@
                 "pr": 389
             }
         ],
-        "timestamp": 1518102000,
-        "isPublished": true
+        "timestamp": 1518102000
     },
     {
         "version": "0.4.7",
@@ -49,8 +45,7 @@
                 "pr": 354
             }
         ],
-        "timestamp": 1517929200,
-        "isPublished": true
+        "timestamp": 1517929200
     },
     {
         "version": "0.4.0",
@@ -64,8 +59,7 @@
                     "Because our tools can be used in both a TS and JS environment, we want to make the private methods of any public facing interface show up at the bottom of auto-complete lists. Additionally, we wanted to remain consistent with respect to our usage of underscores in order to enforce this rule with a linter rule, rather then manual code reviews."
             }
         ],
-        "timestamp": 1514386800,
-        "isPublished": true
+        "timestamp": 1514386800
     },
     {
         "version": "0.3.0",
@@ -75,8 +69,7 @@
                 "pr": 265
             }
         ],
-        "timestamp": 1513695600,
-        "isPublished": true
+        "timestamp": 1513695600
     },
     {
         "version": "0.1.0",
@@ -88,7 +81,6 @@
                 "note": "Updated to TSLint v5.8.0, requiring several rule additions to keep our conventions aligned."
             }
         ],
-        "timestamp": 1510585200,
-        "isPublished": true
+        "timestamp": 1510585200
     }
 ]
diff --git a/packages/types/CHANGELOG.json b/packages/types/CHANGELOG.json
index 053f6241d..f207b7293 100644
--- a/packages/types/CHANGELOG.json
+++ b/packages/types/CHANGELOG.json
@@ -7,8 +7,7 @@
                 "pr": 485
             }
         ],
-        "timestamp": 1522673609,
-        "isPublished": true
+        "timestamp": 1522673609
     },
     {
         "timestamp": 1522658513,
@@ -17,8 +16,7 @@
             {
                 "note": "Dependencies updated"
             }
-        ],
-        "isPublished": true
+        ]
     },
     {
         "version": "0.4.0",
@@ -32,8 +30,7 @@
                 "pr": 456
             }
         ],
-        "timestamp": 1521298800,
-        "isPublished": true
+        "timestamp": 1521298800
     },
     {
         "version": "0.3.1",
@@ -42,8 +39,7 @@
                 "note": "Added `RawLogEntry` type."
             }
         ],
-        "timestamp": 1520434800,
-        "isPublished": true
+        "timestamp": 1520434800
     },
     {
         "version": "0.3.0",
@@ -61,8 +57,7 @@
                 "pr": 429
             }
         ],
-        "timestamp": 1520089200,
-        "isPublished": true
+        "timestamp": 1520089200
     },
     {
         "version": "0.2.1",
@@ -72,8 +67,7 @@
                 "pr": 389
             }
         ],
-        "timestamp": 1518102000,
-        "isPublished": true
+        "timestamp": 1518102000
     },
     {
         "version": "0.2.0",
@@ -83,7 +77,6 @@
                 "pr": 355
             }
         ],
-        "timestamp": 1517929200,
-        "isPublished": true
+        "timestamp": 1517929200
     }
 ]
diff --git a/packages/typescript-typings/CHANGELOG.json b/packages/typescript-typings/CHANGELOG.json
index 348714e17..22ad5f1ad 100644
--- a/packages/typescript-typings/CHANGELOG.json
+++ b/packages/typescript-typings/CHANGELOG.json
@@ -6,13 +6,11 @@
             {
                 "note": "Dependencies updated"
             }
-        ],
-        "isPublished": true
+        ]
     },
     {
         "version": "0.0.2",
         "changes": [],
-        "timestamp": 1522658513,
-        "isPublished": true
+        "timestamp": 1522658513
     }
 ]
diff --git a/packages/utils/CHANGELOG.json b/packages/utils/CHANGELOG.json
index 8d4d5345a..0c71963c3 100644
--- a/packages/utils/CHANGELOG.json
+++ b/packages/utils/CHANGELOG.json
@@ -7,8 +7,7 @@
                 "pr": 485
             }
         ],
-        "timestamp": 1522673609,
-        "isPublished": true
+        "timestamp": 1522673609
     },
     {
         "timestamp": 1522658513,
@@ -17,8 +16,7 @@
             {
                 "note": "Dependencies updated"
             }
-        ],
-        "isPublished": true
+        ]
     },
     {
         "version": "0.4.3",
@@ -28,8 +26,7 @@
                     "Add `@types/node` to dependencies since `intervalUtils` has the `NodeJS` type as part of its public interface."
             }
         ],
-        "timestamp": 1521298800,
-        "isPublished": true
+        "timestamp": 1521298800
     },
     {
         "version": "0.4.2",
@@ -39,8 +36,7 @@
                 "pr": 452
             }
         ],
-        "timestamp": 1521298800,
-        "isPublished": true
+        "timestamp": 1521298800
     },
     {
         "version": "0.4.0",
@@ -54,8 +50,7 @@
                 "pr": 429
             }
         ],
-        "timestamp": 1520089200,
-        "isPublished": true
+        "timestamp": 1520089200
     },
     {
         "version": "0.3.2",
@@ -65,8 +60,7 @@
                 "pr": 389
             }
         ],
-        "timestamp": 1518102000,
-        "isPublished": true
+        "timestamp": 1518102000
     },
     {
         "version": "0.3.0",
@@ -77,8 +71,7 @@
                 "pr": 366
             }
         ],
-        "timestamp": 1517756400,
-        "isPublished": true
+        "timestamp": 1517756400
     },
     {
         "version": "0.2.0",
@@ -92,7 +85,6 @@
                 "pr": 312
             }
         ],
-        "timestamp": 1516114800,
-        "isPublished": true
+        "timestamp": 1516114800
     }
 ]
diff --git a/packages/web3-wrapper/CHANGELOG.json b/packages/web3-wrapper/CHANGELOG.json
index a5a3f8920..bdf09f81e 100644
--- a/packages/web3-wrapper/CHANGELOG.json
+++ b/packages/web3-wrapper/CHANGELOG.json
@@ -16,8 +16,7 @@
                 "pr": 485
             }
         ],
-        "timestamp": 1522673609,
-        "isPublished": true
+        "timestamp": 1522673609
     },
     {
         "version": "0.4.0",
@@ -27,8 +26,7 @@
                 "pr": 465
             }
         ],
-        "timestamp": 1522658513,
-        "isPublished": true
+        "timestamp": 1522658513
     },
     {
         "version": "0.3.0",
@@ -47,8 +45,7 @@
                 "pr": 444
             }
         ],
-        "timestamp": 1521298800,
-        "isPublished": true
+        "timestamp": 1521298800
     },
     {
         "version": "0.2.0",
@@ -70,8 +67,7 @@
                 "pr": 413
             }
         ],
-        "timestamp": 1520089200,
-        "isPublished": true
+        "timestamp": 1520089200
     },
     {
         "version": "0.1.12",
@@ -81,7 +77,6 @@
                 "pr": 389
             }
         ],
-        "timestamp": 1518102000,
-        "isPublished": true
+        "timestamp": 1518102000
     }
 ]