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, 6 insertions, 0 deletions

diff --git a/packages/contracts/README.md b/packages/contracts/README.md
index 0a1c272ab..11b9e5056 100644
--- a/packages/contracts/README.md
+++ b/packages/contracts/README.md
@@ -38,6 +38,12 @@ yarn install
 yarn build
 ```
 
+or
+
+```bash
+yarn build:watch
+```
+
 ### Clean
 
 ```bash