message: Create 0.17.0 section in CHANGELOG.md
diff: ## **[Unreleased]**
  +## 0.17.0 - 2020-05-11
  +
  - [#1401](https://github.com/wasmerio/wasmer/pull/1401) Make breaking change to `RuntimeError`: `RuntimeError` is now more explicit about its possible error values allowing for better insight into why a call into Wasm failed.
  - [#1382](https://github.com/wasmerio/wasmer/pull/1382) Refactored test infranstructure (part 2)
  - [#1380](https://github.com/wasmerio/wasmer/pull/1380) Refactored test infranstructure (part 1)
  