- All files in a PK3's Lua folder are now checked, instead of just LUA_ and .lua files
- Slightly improve radius/height handling
- Simplify wallsprite/flatsprite/spawnceiling settings

- Add tooltips to some thing/line arguments
- Pushable things now have a unique color (brown)
- Changed some other thing colors

Visual Mode: fixed an issue where trying to apply a rotation to things that were not seen yet would cause a crash

- Rename some linedef actions and arguments
- Reorganize thing types, increase color use
- Organize common config