GHC 2017-05-31

2017-05-31 01:05:13, https://git.io/vH4tN in Homebrew/homebrew-core

colordiff 1.0.17
================

Created with `brew bump-formula-pr`.

2017-05-31 00:23:42, https://git.io/vH4kh in Homebrew/homebrew-core

mutt 1.8.3
==========

Created with `brew bump-formula-pr`.