"in-game saving" works in both v0.7 and v0.91, save state contain also "in-game save".
moreover after loading state in v0.91 game freeze but access to menu is available, when you load the same hucard or cdrom image again "in-game save" will presist so it's kinda useful for second game boot. I rather v.07 that is less graphical buggy plus you can run it in DS mode compability in TWilight Menu++, and as for this homebrew it's working quite ok in case of access to memory, some other homebrews don't. I guess maybe only settings save is not working, not sure but i think so. Plus actually you can use save states under some conditions. As far I noticed save state dosn't have all necessery data, so video memory must be preloaded first by current gameplay, it's mean you can load/restore state only if you play the same level. Sometimes both versions are freezing randomly during entering menu L+R or loading another card.