First tests passing on fixed-point s64.u64 class
WIP operator+
Add binary printout for debugging
Fix carry flag computation
Fixed64: negation and subtraction
WIP: subtract camera position from objects before sending them to the render system (and remove corresponding translation from camera matrix)

I think the camera update needs to be moved around in the frame for this to make sense.
Split camera target, camera position and render object updates so they happen in the correct order each frame

Label3Ds are still unstable
Disable trails for now, they're broken
Increase number of steps for orbits - pluto wasn't even on its orbit line

Would like to replace this with an adaptive method that makes more segments near the camera (near the object?)
Refactor of orbit code
WIP refactoring of part of the keplerian computation
Compute mean anomaly in radians; eccentricity is dimensionless
'better' computation of velocity
Try to bring the different representations of body position + vel together a bit
remove unused parameters in the physics calcs
position the moon from JPL data.