increpare/PuzzleScript — pull request #1 by ndrake (2013-10-06 00:04:28+00:00)
Title: Added dirty editor tracking and a warning before user leaves the page with unsaved changes

Not sure if you're accepting pull requests yet (or ever). I've implemented a basic dirty indicator to the editor, and a warning prompt if the user attempts to leave the page with unsaved changed. Only testing on Mac version of Chrome, Safari and Firefox.