[1.7.10] UniMixins as dependency instead of GTNHMixins?

[Radk6]

GTNHMixins was deprecated in favor of UniMixins, which is what most other mods that rely on mixins use. Entity Culling works fine with UniMixins, but by default it downloads GTNHMixins, which conflicts with the former.

This isn't a game-breaking issue or anything, but it'd be a nice quality-of-life change for people using launchers which automatically download dependencies.