Daniel Rogozin authored May 27, 2020 and Marge Bot committed Feb 06, 2021

Co-authored-by: Rinat Stryungis <rinat.stryungis@serokell.io>

Implement GHC Proposal #387

* Parse char literals 'x' at the type level
* New built-in type families CmpChar, ConsSymbol, UnconsSymbol
* New KnownChar class (cf. KnownSymbol and KnownNat)
* New SomeChar type (cf. SomeSymbol and SomeNat)
* CharTyLit support in template-haskell

Updated submodules: binary, haddock.

Metric Decrease:
    T5205
    haddock.base

Metric Increase:
    Naperian
    T13035