Inherit chaiSetup from @0x/dev-utils

contracts/test-utils/CHANGELOG.json

@@ -9,6 +9,10 @@
             {
                 "note": "Use new `Order` structure with `domain` field",
                 "pr": 1742
+            },
+            {
+                "note": "Inherit `chaiSetup` from `@0x/dev-utils`",
+                "pr": TODO
             }
         ]
     },

contracts/test-utils/src/chai_setup.ts

@@ -1,13 +1 @@
-import * as chai from 'chai';
-import chaiAsPromised = require('chai-as-promised');
-import ChaiBigNumber = require('chai-bignumber');
-import * as dirtyChai from 'dirty-chai';
-
-export const chaiSetup = {
-    configure(): void {
-        chai.config.includeStack = true;
-        chai.use(ChaiBigNumber());
-        chai.use(dirtyChai);
-        chai.use(chaiAsPromised);
-    },
-};
+export { chaiSetup } from '@0x/dev-utils';