[Stormcaller]

Not sure if considered bug or "feature" but after first level, on levels that require you to go to your starting point, i.e.: draw a heart or circle, you can click on your starting point again, winning the level with all your nodes remaining. This can be used to skip levels.

[duopixel]

This is a bug indeed, thanks for the notice. (changed the way this was detected and I accidentally the whole thing, sigh).

[lstamour]

"I accidentally the whole thing" ... best typo ever, given the bug. :D Is there such a thing as a typo pun?

[jamesmaniscalco]

Yup! This one's been around for a while:

http://knowyourmeme.com/memes/i-accidentally