Add integrated source-code revision system to Aseba

Created by: sharon13m

It has now happened numerous times - students will reopen their code - only to find that it is blank!

I believe this is due to an issue where they open VPL, and VPL clears out their code, and then they save it. I wonder if maybe they think they have to open VPL to save their file or something...

It would be nice if Thymio automatically had a history of saves- like a version control, so that I could go back and recover their lost work. This has been an issue from last year where students are accidentally clearing their work.. and I believe it has to do with opening the VPL and it clearing it.

Maybe something like a time capsule? Where you can roll back changes?