UI, New glyphs, Fixes

A lot of tweaking in this update. These changes are playable in the browser version on the game page. 

Features

• Splitter: Splits into 3 turners on death. This has some interesting side effects when combined with passive abilities like bomb and wall.
• Ally turner: Like a turner, but it's on your side.
• New death & checkmate UI. You get a sort of score at the end, in the full version I'd like to provide a detailed log.

Fixes

• Fixed some issues with frame rate on the web version. Mostly involved moving to variable animation speed - which I had already set up but wasn't using for debugging purposes.
• Doors no longer opened by explosions. Bomb bullets kept doing this, creating huge dead zones for the player.
• Fixed traps targeting swap-walls.
• Shuffled utility and enemy progression around. These are currently specific to a level number, I'd like them to be randomised by the initial seed as well.