Manual saving

[Vault]

As it stands, the game saves for every new stage you enter.
This is, for the most part, fine.

However, because the game is (at the moment) a bit prone to freezing/crashing for some, it'd be nice to have a manual save system so you don't have to re-do an entire area (or risk losing the entire run because you froze up mid-fight/repair).

This would allow for save-scumming (I know, lame), but I really don't want to lose a bunch of progress because my game decided to crash :(