Pressing Alt F4 now saves before exiting the game.
Added a button to hide and display solution slots.
Patch notes for Comet 64 - v1.08b
Source: Steam Community (opens in a new tab)
Build and release context
Steam update times within 24 hours of this post. Matching dates do not confirm which build it describes.
Build 6415110 · public branch
Steam updated · First observed