v1.4.0

Use Typechain v5 and cleanup

Author: abarmat

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@graphprotocol/contracts",
-  "version": "1.3.0",
+  "version": "1.4.0",
   "description": "Contracts for the Graph Protocol",
   "directories": {
     "test": "test"
@@ -18,7 +18,7 @@
     "@ethersproject/experimental": "^5.1.2",
     "@ethersproject/contracts": "^5.1.1",
     "@ethersproject/transactions": "^5.1.1",
-    "@graphprotocol/common-ts": "^1.5.0",
+    "@graphprotocol/common-ts": "^1.6.0",
     "@nomiclabs/hardhat-ethers": "^2.0.2",
     "@nomiclabs/hardhat-etherscan": "^2.1.1",
     "@nomiclabs/hardhat-waffle": "^2.0.1",