Add visual mode support for a bunch of stuff

• Midtexture repeat count
• Proper offset handling for infinitely repeating midtextures
• Texture skewing
• FOF texture alignment
• Display automatic Thing offsets (e.g. rings) correctly
• Display flipped things correctly
• Display things with centered hitbox correctly

changed the description

added To-do Visual Mode (3D) + 1 deleted label

marked the checklist item Midtexture repeat count as completed

marked the checklist item Proper offset handling for infinitely repeating midtextures as completed

marked the checklist item Texture skewing as completed

changed milestone to %v1.0

changed the description

marked the checklist item FOF texture alignment as completed

changed the description

marked the checklist item Display automatic Thing offsets (e.g. rings) correctly as completed

closed