Autosave on quit?

[Madoc]

Is it somehow easily possible to convince GZDoom to create an autosave (or some other save) when the user quits the game?

Background: I'm creating my own personal launcher, which will automatically load the latest savefile once I start Doom.
If Doom would save on quit, I could thereby have continuity: You can quit any time, and once you start again, you're back where you were last time.
That would be quite awesome.