reflex-test-host-0.1.2.1: ChangeLog.md

# Changelog for reflex-test-host

## 0.1.2.1
- added `Reflex.Test.Monad.Host`

## 0.1.1.0
- generalized reflex constraints
- added `PostBuildT` support
- fixed a crash that would happen if there were no event subscribers

## 0.1.0.0
- first release