Patch notes - localization

Localization! Plus a variety of UI tweaks, some new music, quality of life for streamers, etc.

• Full localization for Simplified Chinese, Spanish (LATAM), Portuguese (BR), German, French, and Russian.
  
• Various tweaks to the UI and text styling.
  
• Added a 'Borderless Fullscreen' mode (just fullscreen but doesn't confine the cursor to the game) and made the game stay active when unfocused so streamers or other multi-monitor players can click around with less bother.
  
• Assorted bugfixes and minor optimizations.