v4.2 (4.1, 4.0), big optimizations

Bugfixes and optimizations just in time for christmas!

Items and funnels have been optimized, so your worlds should run a lot faster. A lot faster.

Fixed also a lot of stuff that people brought up.

Everything should be compatible, but some of the changes could have an impact on how stuff works so backup your worlds and double check your setups.

Scream if anything doesn't work.

v4.1:

Fixed a whoopsie with the belts. Now  belts should be fine again.

v4.2:

Fixed basically the same whoopsie but with the player moving on the belt. I am not so much actively working on the game anymore and it has been a while since I have, so I forget things and then bugs are left in and it becomes messy. I hope it isn't causing too many issues.