converted planets and players to entities

Merge branch 'master' of https://gitlab.com/starkingdoms.tk/starkingdoms.tk

terrible orbit code

Merge branch 'master' of https://gitlab.com/starkingdoms.tk/starkingdoms.tk

what changed

h

attempt to fix force calc

modified rotation

force-based

working on vis_viva

update astronomical constants

update planetary constants

update constants to allow for biasing

realistically scale planet masses

planetary constants - fix asset builds - orbits

add planetary constants

tweak hearty mass - adjust planet scaling

fixed movement again

change failures into warnings

fix