Rewrote some tests.
Removed unnecessary whitespace.
Added tests for UI.Color.
AssemblyVersion update.
Added exception stuff.
Moved TriDevs.TriEngine2D.UI.Color to TriDevs.TriEngine2D.Color
Did work on UI, Colors and new Rectangle struct.
Finished IControl.Rectangle implementation and fixed Rectangle constructor error.
Added documentation to ALL THE COLORS.
Finished documentation of the Rectangle struct.
Mouse click detection for controls implemented.
Merge pull request #21 from Sharparam/patch-13

Updates to UI classes