New Version:

• Increased stability. Starting a new game while the level is changing or the hammer is still on screen doesn't screw things up.
• Images are now pooled instead of being constantly created over and over again. (See this node and this node by pg). Images are loaded once as Tk::Photo objects, then reused from then on with the new getImage() method.
• Blocks displayed on the block preview canvas are now properly centered.
• Changed the next level message.
• Cleaned up the code more.

I must say, this whole process was as easy as it was enjoyable. I would encourage anyone thinking of doing something similar to go ahead and do it.

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