A small update / bug fixes

[list] [*]Fixed the save bug where if you reset your save and finished a level, you couldn't move until you went back to the settings menu or closed the game. [*] Fixed a few level-specific collision bugs. [*] Some small visual optimizations, reducing triangle counts on most of the meshes. [*] Slight visual changes to make the different types of block more distinct from each other (especially near the end of the game). [/list] Thank you!