Merge branch 'development' into feature/testnet-faucets/order-dispenser

* development: (37 commits)
  Add dates to CHANGELOGs
  Change CHANGELOGs
  Add .editorconfig
  Fix a typo
  Temp
  Use forEach instead of map
  Add PR number
  Fix an exception when a signature collision happens
  Fix prettier
  Add regression tests
  Improve the comment and fix an exception
  Add missing comas
  Lerna-ignore tslint and tsconfig
  Update contract versions, fix tests
  Rename directories
  Rename previous contracts, fix imports, add nested file structure
  Move all contracts into a single directory
  Update import
  Fix import
  Get rid of suffixed contract versioning and replace it with a poor-mans package manager. Versions are stored locally, and are generated in a copy-on-write basis as required
  ...

1 files changed, 14 insertions, 0 deletions

diff --git a/packages/contracts/artifacts/SafeMath.json b/packages/contracts/artifacts/SafeMath.json
new file mode 100644
index 000000000..cbe88bef6
--- /dev/null
+++ b/packages/contracts/artifacts/SafeMath.json
@@ -0,0 +1,14 @@
+{
+    "contract_name": "SafeMath",
+    "networks": {
+        "50": {
+            "solc_version": "0.4.18",
+            "keccak256": "0xb1d52f567a893c86f452bd80fbb6907d992046a31b35830bc779116d23fd5549",
+            "optimizer_enabled": 0,
+            "abi": [],
+            "unlinked_binary":
+                "0x60606040523415600e57600080fd5b603580601b6000396000f3006060604052600080fd00a165627a7a723058206526256c7c1e7d1d1b2df1caefcbd76717428d6237de37aacbb5097658456b720029",
+            "updated_at": 1517509621492
+        }
+    }
+}