Version 0.10.2.3

Yet another bugfix release. 

Firstly, I actually fixed the bug that I claimed to have fixed last time, which caused players to carry over their run speed when entering a cutscene. I also undid the 'fix' that didn't work, and just caused characters to always walk after touch-triggered events (including transitions, which could get real annoying).

Secondly, I fixed a very obscure bug where having an ImageDissolve transition as your end of game transition would cause the game to crash. These should now work fine.