Moved to using s3age library.
Level uses stage.
Controls to play with single orbit.
Classified several data structures.
Detect clicks on orbit.
Compile stage on every request.

Saves reloading server on stage edits.
Added solvers for orbits.

Tweaks to orbital.
Orbit calls Solvers, which does lots of work.
orbits level to show off.
Camera switched to ortho for easier VQA.
Temp commit.
Towards using focus for ellipse calculation.
Orbites calculate eccentricity, semimajor correctly.