Properly handle ambiguity in empty char/lang sets.
fuzz-test MessagePack implementations.
Implement utils for loading queried fonts.
Integrate fontsets with Haskell Stylist.
Implement Stylist traits for FontConfig patterns!
Improve memory safety & error checks.
Expose font weight adjustments & correct current-config refcount.
Write init/finalize & pattern language bindings, haskell-side!
Encode & decode charsets on C side (fix Haskell side)
Datamodel FontConfig in Haskell.
Start rewrite from scratch.