I have discovered that I'm most productive in the mornings when it's not too hot. In the noon it really seems to be so hot that my brain melts and can't produce anything concrete. Late at night I'm exhausted. Well, at least I was yesterday after the first time practicing capoeira in a park (not first time practicing capoeira, but first time outside for me), and the day before after a 4-hour bike (motored one, that is) trip.
Too bad I have a day job and can only take advantage of this for like 30min each day, while sipping morning coffee and eating breakfast. Oh well... At least I'm getting _something_ done.
Small update: Spineless is now almost completely docstringed. Physics and scene management are left, incidentally two of the hardest parts to document.