snap-cors-1.2.0: Changelog.md

# 1.2

* Added support for pre-flight requests
* Previous versions has a bug where the actual request wasn't issue after validating CORS

# 1.1

* It is now possible to specify `Access-Control-Expose-Headers`

# 1.0.1

* Allow `hashable` 1.2

# 1.0.0

* Initial release. Support setting the `Access-Control-Allow-Origin` and `Access-Control-Allow-Credentials` headers.