Gamma Shifter - FullBright & Auto Night

Beta version: May be unstable!

Additions

-Added custom config menu available through ModMenu (requires Cloth Config)
-Added link to GitHub Issues page (via ModMenu)
-The amount the gamma changes per input can be customized (via ModMenu)

Changes

-Updated environment in fabric.mod.json from "*" to "client"
-Keypresses buffered when mod was disabled are now only flushed when effects are re-enabled (previously flushed every tick)
-New gamma values are no longer "snapped" (removed to support custom step values)

Notes

-Mod does not require ModMenu/Cloth Config, but options menu will be inaccessible without them