Fails to sort for arbitrary-value class

[DanikVitek]

When I use the rustywind to sort classes and the string contains a class like shadow-[0_2px_2px_rgba(0,0,0,0.2)], it refuses to sort the entry completely and treats it as sorted. When I temporarily replace the class with something simpler like shadow-sm it works fine.
I suppose this has to do with the default class regex so it needs tweaking