Added configurable keybindings. User request. Was a pretty tough one to add as an afterthought. Hopefully I didn't miss any major issues.
Support for alternate way of restarting the game by clicking the impasse icon shown when game cannot be won. User request.
Fix for Steam bootstrapping on Windows. Steam achievements were broken on Windows on the full version of the game and this should fix that issue.
Other small fixes.
Everything is tested to the best of my ability and appears to work. Let me know if there are any further issues. Thank you so much everyone for all the excellent bug reports and feedback!