Hi Tom. Sorry for not getting back to you earlier, been juggling lots of email. Glad you want to get involved with stem and *many* thanks for the patches so far! They've been a big help.
I'm mainly interested in expanding stem's tutorial base as it could really use some more real-world applications and examples, but I'd be fine with extending the tests, too.
Gotcha. As you can probably tell from the volunteer page I favor GSoC projects that are collections of small items rather than a single big one (that way the incremental pieces are helpful, even if the project isn't quite fit into the summer).
What kind of tutorial improvements would you like to make over the summer? I'd love to see them greatly expanded, though I'm not sure if there's enough material there to keep you busy for the whole summer - especially considering how fast you're improving things right now. :P
The next area I was planning to primary focus was client migrations, which would involve work with TorBEL and Tor Weather...
https://www.torproject.org/getinvolved/volunteer.html.en#stemUsability
That said, given some more thought I'm sure we can come up with a project that focuses more on stem itself if you'd prefer.
Cheers! -Damian