Feature Addition

[sourabhaa]

3 puzzles per level; separate best-time per level.

[chimosky]

Tested f9eeb5f, game freezes at the fourth game - first game of new level - the tiles are clickable but it's still showing as level complete. Also the best level was set to 00:01 and this was a new instance.

Logs show;

Traceback (most recent call last):
  File "/home/ibiam/Activities/flip/game.py", line 183, in gameover
    best_seconds = (self.best_time[self._edge-4]) % 60
IndexError: list index out of range

[sourabhaa]

This might be because of the values already stored in best-time file. I guess changing either the destination file or deleting the existing file would work. I've changed the destination file to test, it worked fine then. Kindly test 2d881fe.

[chimosky]

Tested 2d881fe, works as expected but there's a new problem and I've attached a screenshot below although the logs don't show any reason why but it happens at the same time as the previously reported issue - right at the end of the fourth game -.

I don't get the IndexError anymore but I don't think your last commit fixes it, the save and restore feature should involve the puzzle and not just the timer.