Add GHC 8.6.4
Created by: dtchepak
Added downloads available from https://downloads.haskell.org/~ghc/8.6.4/ as at the time of commit.
Have not made this recommended yet until common tools and libs are all confirmed to work fine.
Created by: dtchepak
Added downloads available from https://downloads.haskell.org/~ghc/8.6.4/ as at the time of commit.
Have not made this recommended yet until common tools and libs are all confirmed to work fine.
Created by: dtchepak
Not sure if I should have updated .travis.sh
to test 8.6.4.