UPDATE: It's here -- the whatever the name of the October update is!

The canary has flown out of the cage! Tell everybody!

Updates here (again):

• Retrace your steps with Undo! If you accidentally(?) drown one too many squares, or if you just feel like playing "what-if?", just hit a button, and you're back to where you were just a fraction of a second ago. Press it again, and you're where you were a fraction of a second ago before then. You get the idea.
• Call up the Legend to get a description of all of the pieces in the level. Get a couple of hints and tips -- and some much-needed context for the puzzle in front of you!
• Tired of the same old bring floor tiles, water, walls, and other things? The worlds' themes have been differentiated even more, and details have been sprinkled all around the floor.
• Postgame content. Beating the game has never been more rewarding!
• Bugfixes. And usability tweaks.

Please report any bugs you might find. And leave feedback for future updates!

Happy Squaring!