I'm not doing version numbers yet but there's been an update

Hi! Hope y'all're doing well. Fairly short changelog today, but some important fixes and a few new features.

• Added first draft of light theme, for those of you who prefer it over a dark theme. Feedback is welcome and encouraged!
• Option for turning on the Check button again.
• Fixed a bug where time spent on a loaded puzzle wasn't being respected
• Fixed a bug where the level a puzzle started on wasn't being respected either
• Fixed undoing into a mistake counting as an additional mistake
• Fixed the crash that occurs when a new option is added and you try to play