Version bump in 'unix' and 'parsec'

Mon Oct 12 23:04:31 UTC 2020

Three weeks ago I sent 10 pull requests to GHC boot libraries, bumping the upper bound on ‘base’ to accept base-4.16, for the next GHC release.

Most of these were merged, but two remain:

1. https://github.com/haskell/unix/pull/158
2. https://github.com/haskell/parsec/pull/118

Could somebody with the permissions hit the merge button? It’s just a version bump and I need it to unblock some other work.

- Vlad