use nbody particles instead of TestParticle
move to using nbody particles
forgot to specify units
remove interpolate, update tests to use nbody particles
whitespace
totally broken test...
update inferpotential call
fix ln likelihood
build lm10 acceleration cython
don't import old particle class
remove old integratelm10 hack
no units kwarg in Particle
remove extraneous tuple
args default should be empty tuple
working towards new structure
merge conflict fix