[EuroPython] EuroPython 2015 sprints

[Brecht Machiels]

Hello,
 
Is there any information on the sprints to be held in the weekend following the conference? As as first-time attendee, I'm not sure what to expect. Some general information would be great. Do I need to register for them? Can I propose a sprint myself? Can I just work on my own project (RinohType) and be available to help anyone who wants to try it out?
 
Thanks,
Brecht