Add Ganache GUI fix changelog entry.

Author: nventuro

CHANGELOG.md

@@ -7,6 +7,7 @@
  * Rename `makeInterfaceId` to `makeInterfaceId.ERC165`, and add `makeInterfaceId.ERC1820`. ([#21](https://github.com/OpenZeppelin/openzeppelin-test-helpers/pull/21)
  * Add possibility to configure a custom web3 instance. ([#38](https://github.com/OpenZeppelin/openzeppelin-test-helpers/pull/38))
  * Replace `shouldFail` with `expectRevert`, with an improved API. ([#39](https://github.com/OpenZeppelin/openzeppelin-test-helpers/pull/39))
+ * Fix detection of Ganache pre-releases (such as those used by Ganache GUI v2.0.1). ([#46](https://github.com/OpenZeppelin/openzeppelin-test-helpers/pull/46))
 
 #### How to upgrade from 0.3
 - Change all occurences of `makeInterfaceId` to `makeInterfaceId.ERC165`.