height and width modifiers added to TextBlock and Sprite making it possible to scale width and height of an object individually.
The new modifiers also works with collision checking.

View throwing an error when enabling engine.drawMasks or engine.drawBoundingBoxes has been fixed
Functions for setting the width of Sprite and TextBlock added:
setWidth: Calculates and sets the width modifier to fit a targetted width.
setHeight: The same for the height
Error in TextBlock width modification fixed