Merge branch 'development' into feature/portal-ledger-support

* development: (437 commits)
  Publish
  Update yarn.lock
  Update the CHANGELOG
  Fix the bug making it impossible to specify the custom ZRX address
  Fix fill/cancel order by looking for NoError instead of empty blockchainErr given the BlockchainErrs type refactor
  Add a comment about a yarn bug
  Add our mainnet and kovan nodes as backups for Portal requests
  Fix bug hiding the user info from topBar
  Add dev-utils package to top level README
  Prettier newline
  Prettier
  Allow Token symbols to be alphanumeric
  Update CHANGELOG, rebase on development
  Should not -> cannot
  Reject negative amounts in isValidBaseUnitAmount
  Re-add changelog for 0x.js
  Fix prettier
  Update yarn.lock
  Move tests to a separate folder
  Change file layout
  ...

# Conflicts:
#	packages/website/README.md

7 files changed, 129 insertions, 133 deletions

diff --git a/packages/contracts/migrations/1_initial_migration.ts b/packages/contracts/migrations/1_initial_migration.ts
index b34bbc2a1..8661ee218 100644
--- a/packages/contracts/migrations/1_initial_migration.ts
+++ b/packages/contracts/migrations/1_initial_migration.ts
@@ -1,5 +1,5 @@
-import {Artifacts} from '../util/artifacts';
-const {Migrations} = new Artifacts(artifacts);
+import { Artifacts } from '../util/artifacts';
+const { Migrations } = new Artifacts(artifacts);
 
 module.exports = (deployer: any) => {
     deployer.deploy(Migrations);
diff --git a/packages/contracts/migrations/2_deploy_independent_contracts.ts b/packages/contracts/migrations/2_deploy_independent_contracts.ts
index 878860eb6..ac1752347 100644
--- a/packages/contracts/migrations/2_deploy_independent_contracts.ts
+++ b/packages/contracts/migrations/2_deploy_independent_contracts.ts
@@ -1,11 +1,6 @@
-import {Artifacts} from '../util/artifacts';
-import {ContractInstance, MultiSigConfigByNetwork} from '../util/types';
-const {
-    MultiSigWalletWithTimeLock,
-    TokenTransferProxy,
-    EtherToken,
-    TokenRegistry,
-} = new Artifacts(artifacts);
+import { Artifacts } from '../util/artifacts';
+import { MultiSigConfigByNetwork } from '../util/types';
+const { MultiSigWalletWithTimeLock, TokenTransferProxy, EtherToken, TokenRegistry } = new Artifacts(artifacts);
 
 let multiSigConfigByNetwork: MultiSigConfigByNetwork;
 try {
@@ -25,14 +20,16 @@ module.exports = (deployer: any, network: string, accounts: string[]) => {
     };
     const config = multiSigConfigByNetwork[network] || defaultConfig;
     if (network !== 'live') {
-            deployer.deploy(MultiSigWalletWithTimeLock, config.owners,
-                            config.confirmationsRequired, config.secondsRequired)
+        deployer
+            .deploy(MultiSigWalletWithTimeLock, config.owners, config.confirmationsRequired, config.secondsRequired)
             .then(() => {
-                    return deployer.deploy(TokenTransferProxy);
-            }).then(() => {
-                    return deployer.deploy(TokenRegistry);
-            }).then(() => {
-                    return deployer.deploy(EtherToken);
+                return deployer.deploy(TokenTransferProxy);
+            })
+            .then(() => {
+                return deployer.deploy(TokenRegistry);
+            })
+            .then(() => {
+                return deployer.deploy(EtherToken);
             });
     } else {
         deployer.deploy([
diff --git a/packages/contracts/migrations/3_register_tokens.ts b/packages/contracts/migrations/3_register_tokens.ts
index c72ac1510..d5cf63f94 100644
--- a/packages/contracts/migrations/3_register_tokens.ts
+++ b/packages/contracts/migrations/3_register_tokens.ts
@@ -1,86 +1,95 @@
 import * as Bluebird from 'bluebird';
 import * as _ from 'lodash';
 
-import {Artifacts} from '../util/artifacts';
-import {constants} from '../util/constants';
-import {ContractInstance, Token, TokenInfoByNetwork} from '../util/types';
+import { Artifacts } from '../util/artifacts';
+import { constants } from '../util/constants';
+import { ContractInstance, Token } from '../util/types';
 
-import {tokenInfo} from './config/token_info';
-const {
-    DummyToken,
-    EtherToken,
-    ZRXToken,
-    TokenRegistry,
-} = new Artifacts(artifacts);
+import { tokenInfo } from './config/token_info';
+const { DummyToken, EtherToken, ZRXToken, TokenRegistry } = new Artifacts(artifacts);
 
 module.exports = (deployer: any, network: string) => {
     const tokens = network === 'live' ? tokenInfo.live : tokenInfo.development;
-    deployer.then(() => {
-        return TokenRegistry.deployed();
-    }).then((tokenRegistry: ContractInstance) => {
-        if (network !== 'live') {
-            const totalSupply = Math.pow(10, 18) * 1000000000;
-            return Bluebird.each(tokens.map((token: Token) => DummyToken.new(
-                token.name,
-                token.symbol,
-                token.decimals,
-                totalSupply,
-        )), _.noop).then((dummyTokens: ContractInstance[]) => {
-                const weth = {
-                    address: EtherToken.address,
-                    name: 'Ether Token',
-                    symbol: 'WETH',
-                    url: '',
+    deployer
+        .then(() => {
+            return TokenRegistry.deployed();
+        })
+        .then((tokenRegistry: ContractInstance) => {
+            if (network !== 'live') {
+                const totalSupply = Math.pow(10, 18) * 1000000000;
+                return Bluebird.each(
+                    tokens.map((token: Token) => DummyToken.new(token.name, token.symbol, token.decimals, totalSupply)),
+                    _.noop,
+                ).then((dummyTokens: ContractInstance[]) => {
+                    const weth = {
+                        address: EtherToken.address,
+                        name: 'Ether Token',
+                        symbol: 'WETH',
+                        url: '',
+                        decimals: 18,
+                        ipfsHash: constants.NULL_BYTES,
+                        swarmHash: constants.NULL_BYTES,
+                    };
+                    return Bluebird.each(
+                        dummyTokens
+                            .map((tokenContract: ContractInstance, i: number) => {
+                                const token = tokens[i];
+                                return tokenRegistry.addToken(
+                                    tokenContract.address,
+                                    token.name,
+                                    token.symbol,
+                                    token.decimals,
+                                    token.ipfsHash,
+                                    token.swarmHash,
+                                );
+                            })
+                            .concat(
+                                tokenRegistry.addToken(
+                                    weth.address,
+                                    weth.name,
+                                    weth.symbol,
+                                    weth.decimals,
+                                    weth.ipfsHash,
+                                    weth.swarmHash,
+                                ),
+                            ),
+                        _.noop,
+                    );
+                });
+            } else {
+                const zrx = {
+                    address: ZRXToken.address,
+                    name: '0x Protocol Token',
+                    symbol: 'ZRX',
+                    url: 'https://www.0xproject.com/',
                     decimals: 18,
                     ipfsHash: constants.NULL_BYTES,
                     swarmHash: constants.NULL_BYTES,
                 };
-                return Bluebird.each(dummyTokens.map((tokenContract: ContractInstance, i: number) => {
-                    const token = tokens[i];
-                    return tokenRegistry.addToken(
-                        tokenContract.address,
-                        token.name,
-                        token.symbol,
-                        token.decimals,
-                        token.ipfsHash,
-                        token.swarmHash,
-                    );
-                }).concat(tokenRegistry.addToken(
-                    weth.address,
-                    weth.name,
-                    weth.symbol,
-                    weth.decimals,
-                    weth.ipfsHash,
-                    weth.swarmHash,
-            )), _.noop);
-            });
-        } else {
-            const zrx = {
-                address: ZRXToken.address,
-                name: '0x Protocol Token',
-                symbol: 'ZRX',
-                url: 'https://www.0xproject.com/',
-                decimals: 18,
-                ipfsHash: constants.NULL_BYTES,
-                swarmHash: constants.NULL_BYTES,
-            };
-            return Bluebird.each(tokens.map((token: Token) => {
-                return tokenRegistry.addToken(
-                    token.address,
-                    token.name,
-                    token.symbol,
-                    token.decimals,
-                    token.ipfsHash,
-                    token.swarmHash,
+                return Bluebird.each(
+                    tokens
+                        .map((token: Token) => {
+                            return tokenRegistry.addToken(
+                                token.address,
+                                token.name,
+                                token.symbol,
+                                token.decimals,
+                                token.ipfsHash,
+                                token.swarmHash,
+                            );
+                        })
+                        .concat(
+                            tokenRegistry.addToken(
+                                zrx.address,
+                                zrx.name,
+                                zrx.symbol,
+                                zrx.decimals,
+                                zrx.ipfsHash,
+                                zrx.swarmHash,
+                            ),
+                        ),
+                    _.noop,
                 );
-            }).concat(tokenRegistry.addToken(
-                zrx.address,
-                zrx.name,
-                zrx.symbol,
-                zrx.decimals,
-                zrx.ipfsHash,
-                zrx.swarmHash,
-        )), _.noop);
-        }
-    });
+            }
+        });
 };
diff --git a/packages/contracts/migrations/4_configure_proxy.ts b/packages/contracts/migrations/4_configure_proxy.ts
index f4c4a725b..ff3b844d6 100644
--- a/packages/contracts/migrations/4_configure_proxy.ts
+++ b/packages/contracts/migrations/4_configure_proxy.ts
@@ -1,27 +1,22 @@
-import {Artifacts} from '../util/artifacts';
-import {ContractInstance} from '../util/types';
-const {
-    TokenTransferProxy,
-    Exchange,
-    TokenRegistry,
-} = new Artifacts(artifacts);
+import { Artifacts } from '../util/artifacts';
+import { ContractInstance } from '../util/types';
+const { TokenTransferProxy, Exchange, TokenRegistry } = new Artifacts(artifacts);
 
 let tokenTransferProxy: ContractInstance;
 module.exports = (deployer: any) => {
-    deployer.then(async () => {
-        return Promise.all([
-            TokenTransferProxy.deployed(),
-            TokenRegistry.deployed(),
-        ]);
-    })
-    .then((instances: ContractInstance[]) => {
-        let tokenRegistry: ContractInstance;
-        [tokenTransferProxy, tokenRegistry] = instances;
-        return tokenRegistry.getTokenAddressBySymbol('ZRX');
-    })
-    .then((ptAddress: string) => {
-        return deployer.deploy(Exchange, ptAddress, tokenTransferProxy.address);
-    }).then(() => {
-        return tokenTransferProxy.addAuthorizedAddress(Exchange.address);
-    });
+    deployer
+        .then(async () => {
+            return Promise.all([TokenTransferProxy.deployed(), TokenRegistry.deployed()]);
+        })
+        .then((instances: ContractInstance[]) => {
+            let tokenRegistry: ContractInstance;
+            [tokenTransferProxy, tokenRegistry] = instances;
+            return tokenRegistry.getTokenAddressBySymbol('ZRX');
+        })
+        .then((ptAddress: string) => {
+            return deployer.deploy(Exchange, ptAddress, tokenTransferProxy.address);
+        })
+        .then(() => {
+            return tokenTransferProxy.addAuthorizedAddress(Exchange.address);
+        });
 };
diff --git a/packages/contracts/migrations/5_transfer_ownership.ts b/packages/contracts/migrations/5_transfer_ownership.ts
index 17de9bc7b..a27801de3 100644
--- a/packages/contracts/migrations/5_transfer_ownership.ts
+++ b/packages/contracts/migrations/5_transfer_ownership.ts
@@ -1,25 +1,20 @@
-import {Artifacts} from '../util/artifacts';
-import {ContractInstance} from '../util/types';
-const {
-    TokenTransferProxy,
-    MultiSigWalletWithTimeLock,
-    TokenRegistry,
-} = new Artifacts(artifacts);
+import { Artifacts } from '../util/artifacts';
+import { ContractInstance } from '../util/types';
+const { TokenTransferProxy, MultiSigWalletWithTimeLock, TokenRegistry } = new Artifacts(artifacts);
 
 let tokenRegistry: ContractInstance;
 module.exports = (deployer: any, network: string) => {
     if (network !== 'development') {
         deployer.then(async () => {
-            return Promise.all([
-                TokenTransferProxy.deployed(),
-                TokenRegistry.deployed(),
-            ]).then((instances: ContractInstance[]) => {
-                let tokenTransferProxy: ContractInstance;
-                [tokenTransferProxy, tokenRegistry] = instances;
-                return tokenTransferProxy.transferOwnership(MultiSigWalletWithTimeLock.address);
-            }).then(() => {
-                return tokenRegistry.transferOwnership(MultiSigWalletWithTimeLock.address);
-            });
+            return Promise.all([TokenTransferProxy.deployed(), TokenRegistry.deployed()])
+                .then((instances: ContractInstance[]) => {
+                    let tokenTransferProxy: ContractInstance;
+                    [tokenTransferProxy, tokenRegistry] = instances;
+                    return tokenTransferProxy.transferOwnership(MultiSigWalletWithTimeLock.address);
+                })
+                .then(() => {
+                    return tokenRegistry.transferOwnership(MultiSigWalletWithTimeLock.address);
+                });
         });
     }
 };
diff --git a/packages/contracts/migrations/config/multisig_sample.ts b/packages/contracts/migrations/config/multisig_sample.ts
index eca54ba28..97cdc2eae 100644
--- a/packages/contracts/migrations/config/multisig_sample.ts
+++ b/packages/contracts/migrations/config/multisig_sample.ts
@@ -1,4 +1,4 @@
-import {MultiSigConfigByNetwork} from '../../util/types';
+import { MultiSigConfigByNetwork } from '../../util/types';
 
 // Make a copy of this file named `multisig.js` and input custom params as needed
 export const multiSig: MultiSigConfigByNetwork = {
diff --git a/packages/contracts/migrations/config/token_info.ts b/packages/contracts/migrations/config/token_info.ts
index 766a28664..6ae67175e 100644
--- a/packages/contracts/migrations/config/token_info.ts
+++ b/packages/contracts/migrations/config/token_info.ts
@@ -1,5 +1,5 @@
-import {constants} from '../../util/constants';
-import {TokenInfoByNetwork} from '../../util/types';
+import { constants } from '../../util/constants';
+import { TokenInfoByNetwork } from '../../util/types';
 
 export const tokenInfo: TokenInfoByNetwork = {
     development: [