Added

• IMixinConfigHijacker API, allows denial of mixin configurations from being applied (idea: @Desoroxxx)

Changed

• Updated MixinExtras to 0.3.5

Fixed

• Mixin information being duplicated in crash reports in certain situations

Full changelog between 8.9 and 9.0: https://github.com/CleanroomMC/MixinBooter/compare/8.9...9.0