Added null check for pixi sprite calculateverticies because it sometimes makes a texture invalid when it shouldn't be.
Maybe fixed a case from interpolation that a sprite could not be cleaned up. Need to make a better system for controlling sprites. Added binds for arrow keys to scroll multiline text. Added support for colorto tween changing tint not just alpha.
Fix some things so that if errors happen in audio the rest will still run.
Work on text stuff. Work on tweens. Beginning audio support.
