Fixed namespace of Primitives2D.
Added code to set game window into 0,0 point after creation
Added variable OverColor to TextString component making available to change color of selected text
WorldManager now throws an exception while trying to get world with non-registered name (previously: returns null, discussion about result of this function in progress)
Changed Entity hierarchy
Engine entity - extended XNA DrawableGameComponent with world binding
Basic Entity - has position, hitbox and active/visible flags
GameEnity - has graphicsand angle; default methods for drawing and updated, used as base for game objects
Added UI components: button, label and label-button