proto-lens-protobuf-types-0.2.2.0: Changelog.md

# Changelog for `proto-lens-protobuf-types`

## Unreleased changes

## v0.2.2.0
- Add the `Data.ProtoLens.Any` module for storing arbitrary Messages (#88).
- Bump the dependency on `base` to support `ghc-8.2.1`.

## v0.2.1.0
Initial version.