Merge branch 'development' into v2-prototype

* development: (29 commits)
  Do not remove artifacts when running `clean`
  fix style errors
  Fix circular dependency
  Add my profile image to images
  Add myself to about page
  Add dogfood configs to website
  Revert to lerna:run lint
  Do lint sequentially
  Exclude monorepo-scripts from tslint as test
  Fix prettier
  Add hover state to top tokens
  Change to weekly txn volume
  Change minimum Node version to 6.12
  Document Node.js version requirement and add it to package.json
  Apply prettier to some files which were not formatted correctly
  Fix TSLint issues
  Fix TSLint issues
  Update ethereeumjs-testrpc to ganache-cli
  Fix infinite loop
  Add changelog entries for packages where executable binary exporting fixed
  ...

# Conflicts:
#	packages/contracts/package.json
#	packages/contracts/util/formatters.ts
#	packages/contracts/util/signed_order_utils.ts
#	packages/migrations/package.json
#	yarn.lock

1 files changed, 1 insertions, 1 deletions

diff --git a/packages/contracts/src/utils/crypto.ts b/packages/contracts/src/utils/crypto.ts
index 222cb7cca..80c5f30a5 100644
--- a/packages/contracts/src/utils/crypto.ts
+++ b/packages/contracts/src/utils/crypto.ts
@@ -18,7 +18,7 @@ export const crypto = {
     solSHA256(args: any[]): Buffer {
         return crypto._solHash(args, ABI.soliditySHA256);
     },
-    _solHash(args: any[], hashFunction: (types: string[], values: any[]) => Buffer) {
+    _solHash(args: any[], hashFunction: (types: string[], values: any[]) => Buffer): Buffer {
         const argTypes: string[] = [];
         _.each(args, (arg, i) => {
             const isNumber = _.isFinite(arg);