Version 1.1 released

This version bring the following fixes and changes:

• Piece storage space now only scrolls if mouse pointer is over it.
• Buttons can be pressed only if a piece is currently not dragged.
• Clicking the clue button once activates clue mode, clicking it again deactivates. When in clue mode, you can click any piece to receive a clue on its correct position.
• When a piece is picked up, it centers on mouse immediately, not when you start moving the mouse.
• Game now tracks score, awarding 100 points for every second remaining on timer when level is completed.