Updated typechain version and patch

package.json

@@ -47,7 +47,7 @@
     "ts-generator": "^0.0.8",
     "ts-node": "^8.2.0",
     "tslint": "^5.17.0",
-    "typechain": "^0.3.14",
+    "typechain": "^0.3.17",
     "typescript": "^3.5.2",
     "underscore": "^1.9.1",
     "web3": "^1.0.0-beta.52",
@@ -59,4 +59,4 @@
     "solc": "0.5.9",
     "solidity-coverage": "github:rotcivegaf/solidity-coverage#5875f5b7bc74d447f3312c9c0e9fc7814b482477"
   }
-}
+}

patches/typechain+0.3.17.patch

@@ -0,0 +1,14 @@
+diff --git a/node_modules/typechain/dist/targets/truffle/generation.js b/node_modules/typechain/dist/targets/truffle/generation.js
+index 8e57db7..aed8120 100644
+--- a/node_modules/typechain/dist/targets/truffle/generation.js
++++ b/node_modules/typechain/dist/targets/truffle/generation.js
+@@ -4,7 +4,8 @@ const typeParser_1 = require("../../parser/typeParser");
+ function codegen(contracts) {
+     const template = `
+ /// <reference types="truffle-typings" />
+-import { BigNumber } from "bignumber.js";
++import BN from "bn.js";
++type BigNumber = string | number | BN;
+
+ ${contracts.map(generateContractInterface).join("\n")}
+

yarn.lock

@@ -5343,10 +5343,10 @@ type-is@~1.6.17, type-is@~1.6.18:
     media-typer "0.3.0"
     mime-types "~2.1.24"
 
-typechain@^0.3.14:
-  version "0.3.14"
-  resolved "https://registry.yarnpkg.com/typechain/-/typechain-0.3.14.tgz#c58df17b20494ad08dff311cf6984bf7a2accb78"
-  integrity sha512-nOg7n7LngcA4Sx53q+4jjSpIEulEayZYnCMfyItnyxCX3nTCWVg8QXZppMDYNfITkJHex0v5dTgklOQzSbfUkw==
+typechain@^0.3.17:
+  version "0.3.17"
+  resolved "https://registry.yarnpkg.com/typechain/-/typechain-0.3.17.tgz#aae21d14a9b7aa2a985e25e9f89bea8f54223d4c"
+  integrity sha512-JydKdW/xdpsp3uLz8y8WlfGX6a8/3BLAKAAmVWI4NvsJED2/BgJ5Du36OjSvlMMZDahP1AdbU+B/NsCiUqLRZg==
   dependencies:
     command-line-args "^4.0.7"
     debug "^3.0.1"