GHC 8.6 support?

[kozross]

I just noticed that Brittany won't build with GHC 8.6 via cabal new-install. Would it be possible to have support for GHC 8.6 too?

Specifically, I get this:

Resolving dependencies...
cabal: Could not resolve dependencies:
[__0] trying: base-4.12.0.0/installed-4.1... (user goal)
[__1] next goal: brittany (user goal)
[__1] rejecting: brittany-0.11.0.0 (conflict: base==4.12.0.0/installed-4.1...,
brittany => base>=4.9 && <4.12)
[__1] rejecting: brittany-0.10.0.0, brittany-0.9.0.1, brittany-0.9.0.0,
brittany-0.8.0.3 (conflict: base==4.12.0.0/installed-4.1..., brittany =>
base>=4.9 && <4.11)
[__1] rejecting: brittany-0.8.0.2 (conflict: base==4.12.0.0/installed-4.1...,
brittany => base>=4.9 && <4.10)
[__1] fail (backjumping, conflict set: base, brittany)
After searching the rest of the dependency tree exhaustively, these were the
goals I've had most trouble fulfilling: base, brittany

[tfausak]

See #222.