proto-lens-setup-0.4.0.1: Changelog.md

# Changelog for `proto-lens-setup`

## v0.4.0.1
- Bump the lower bound on `base` and `containers` to support `ghc-8.6.1`.
- Support `Cabal-2.4.*`.


## v0.4.0.0
- Split out from `proto-lens-protoc`.

## Older
See `Changelog.md` for `proto-lens-protoc`.