Build 50 release notes

Happy New Year folks! Kicking things off with a sizeable update, including lots of quality of life stuff. [h2]New Features/Content 🙌[/h2] [list] [*]Add input rebinding [*]Add two endings to final level [*]Add secret area/journal entry to final level [*]Implement Completionist, Mycologist and BingeDrinker achievements [*]Add confirmation dialogs for retry and exit [*]Display day number at the start of each level [*]Add SFX and music volume settings [/list] [h2]Bug Fixes/Improvements 🐛[/h2] [list] [*]Fix for glitchy mutant miner idle animation [*]Various texture improvements [*]Various optimizations [*]Fix for enemy blood decals not working in final area [*]Implement quick turn for gamepad [/list] This represents the bulk of the End Game Update, just a few loose ends I want to tie up before I call it [i]done[/i] done.