ModernFix

Depending on the size of this release, there may be a human-readable changelog available on the wiki page.

Changes since 5.11.0+1.16.5

• Retrieve quads on incorrect cullface lists if direction matches - embeddedt
• Fix nixie tubes being invisible with faster_item_rendering - embeddedt
• Remove dynamic item overrides - embeddedt
• Handle missing models in item overrides - embeddedt