Version 0.3.1: Bugfixes and Improvements

This version includes some minor bugfixes and improvements:

• Fixed a bug where the ringtone sound effect was not being played (issue #83).
• Optimized all images to improve load times (issue #80).
• You now have the option to replay a cutscene immediately after it ends.
• Fixed a minor typo in the hints for the level "Three Lefts Make a Right".
• Various internal code improvements and refactors.