v0.901

A hot-fix update:

• A/B blocks were not destroying traps attached to them when toggling.
• The player now applies "corner slipping" when moving up fast enough - this is to help with 1 tile gaps.
• GET has been nerfed so it doesn't update its course after choosing a target, and it's been promoted to near the top of the shots because it's still OP.
• Other small fixes and adjustments.

A boss monster has been fully written (the Jumper), but it needs testing in situ. I've already come up with two arenas that result in very different difficulties. I'd also like a different type of boss before I publish this feature, maybe a Walker or a Flyer. I've taken the wrong lessons from popping chests and loot boxes in games and remembered only the bad things that were in them. I want to share this feeling of anticipation and disappointment.