v2.2.0

• Added dock and dockapp support.
• Added -c option.
• Added snap-to-edge attraction.
• Added shaded container state
• Added tiling factor when resizing window.
• Added config.h
• Added hand mouse cursor for left button.
• Fixed support for transparent windows (#3)
• Changed most command-line options to X Resources.
• Changed decoration code (using colors rather than pixmaps).
• Removed motion event handling.