Can we add "y'all" to the normalizer conversion table?

[MeanwhileMedia]

In my app i'm finding "y'all" to be a somewhat common contraction that isn't accounted for in normalizer.js:
https://github.com/NaturalNode/natural/blob/master/lib/natural/normalizers/normalizer.js#L34

[devinhedge]

Y'all better fix this or y'all fixin to git a whoopin bi the Southern Man.

#sarcasm #dialects

[titanism]

You should use something like expand-contractions before passing your String to the tokenizer.

See #533

[titanism]

Ref: stdlib-js/stdlib#496

[Hugo-ter-Doest]

Won't fix, is better solved with preprocessing.