Backport changes to `ansi` and `fuzzaldrin` libs?

[kLabz]

ansi

Not much to backport there, only fixed Std.is warning.

fuzzaldrin

Not sure those changes would be welcome there:

• Sorting results might not be wanted; would need to be configurable?
• AST-like score result adds a bit of overhead
• Still some TODOs to handle before backporting anyway (code paths I'm not using)