Crash recovery

I don't know how practical this is, but it _seems_ possible. Could we detect if Code crashed/didn't successfully start the last time, and if so, reset plugins and open files to get Code back to an openable state? It seems like we get into bad states with certain files (and more rarely, certain plugins). Automatically recovering after a crash would at least be better than seemingly permanently crashing, and we usually tell people to reset GSettings to recover from those crashes anyway.