More bugfixes...

More post voting bugfixes:

• Added a Windows x86 build.
• Fixed: Player idle state didn't correctly play when starting a stage.
• Fixed: Siblings collision areas changed to polygon shapes. No more "I died but I didn't get hit." (I hope).
• WIP: Added some changes to the bounce code. I think it feels better (and so far I've not seen any enemies stuck for a while). Siblings are now slightly less heavy, and a bit faster than their parents.