Flesh out blender support

[blackwer]

• [x] Spherical peripheries
• [ ] Generic peripheries
• [ ] Ellipsoidal peripheries
• [ ] Streamlines (https://github.com/AaronWatters/feedWebGL2/blob/master/feedWebGL2/vector_field_3d.py -- talk more to aaron)
• [x] Load in fibers
• [x] Bodies
• [ ] Timestamp (https://github.com/mikeycal/vse-stopwatch-timer-for-blender/blob/master/vse_stopwatch_and_timer_for_blender.py -- GPL, but decent for thinking of techniques for how to do this)
• [ ] Configurable
• [ ] Common backend for analysis?

Blender proof of concept works very very well, but there's a lot of work that can be done.