Merge branch 'development' into fixOrderValidation

* development: (25 commits)
  Publish
  Updated CHANGELOGS
  fix(instant): fix bug where we potentially fetch balance for the wrong account
  fix: Lock Ledger hw-transport to 4.24.0
  fix: wrong prop names used
  chore: PR feedback
  fix: broken features because of merge
  fix: remove default props, fix lint problems
  chore: convert payment method to stateless component
  feat: add boxShadow on dropdown hover
  fix: various style issues
  fix: remove all:initial rule from all div based ui compoennts
  fix: token selector scrolling container height
  chore(instant): fix lint errors
  feat(instant): fetch balance at startup
  feat(instant): fetch account address at startup and drive account state changes
  chore: cleanup
  fix: restore button to previous state
  feat: implement copy-to-clipboard
  feat: add MetaMask sign, refactor Circle
  ...

packages/contracts/package.json

@@ -1,7 +1,7 @@
 {
     "private": true,
     "name": "contracts",
-    "version": "2.1.50",
+    "version": "2.1.51",
     "engines": {
         "node": ">=6.12"
     },
@@ -45,12 +45,12 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/contracts/README.md",
     "devDependencies": {
-        "@0x/abi-gen": "^1.0.14",
-        "@0x/dev-utils": "^1.0.13",
-        "@0x/sol-compiler": "^1.1.8",
-        "@0x/sol-cov": "^2.1.8",
-        "@0x/subproviders": "^2.1.0",
-        "@0x/tslint-config": "^1.0.9",
+        "@0x/abi-gen": "^1.0.15",
+        "@0x/dev-utils": "^1.0.14",
+        "@0x/sol-compiler": "^1.1.9",
+        "@0x/sol-cov": "^2.1.9",
+        "@0x/subproviders": "^2.1.1",
+        "@0x/tslint-config": "^1.0.10",
         "@types/bn.js": "^4.11.0",
         "@types/ethereumjs-abi": "^0.6.0",
         "@types/lodash": "4.14.104",
@@ -71,15 +71,15 @@
         "yargs": "^10.0.3"
     },
     "dependencies": {
-        "@0x/base-contract": "^3.0.2",
-        "@0x/order-utils": "^2.0.0",
-        "@0x/types": "^1.2.0",
-        "@0x/typescript-typings": "^3.0.3",
-        "@0x/utils": "^2.0.3",
-        "@0x/web3-wrapper": "^3.1.0",
+        "@0x/base-contract": "^3.0.3",
+        "@0x/order-utils": "^2.0.1",
+        "@0x/types": "^1.2.1",
+        "@0x/typescript-typings": "^3.0.4",
+        "@0x/utils": "^2.0.4",
+        "@0x/web3-wrapper": "^3.1.1",
         "@types/js-combinatorics": "^0.5.29",
         "bn.js": "^4.11.8",
-        "ethereum-types": "^1.1.1",
+        "ethereum-types": "^1.1.2",
         "ethereumjs-abi": "0.6.5",
         "ethereumjs-util": "^5.1.1",
         "ethers": "~4.0.4",