test action conservation in actionAngleStaeckel for more potentials, to test the C code further
tests of ER and Ez for 5 and 6D rbits
further basic tests of ER and Ez
also test AttributeError for Ez
cover more Jacobi cases
rm prints
also check C for RZOrbit
start testing Orbit setups; fix o.x() and o.vx() for linearOrbits
test ra and dec of setup; make default zo consistent between Orbit setup and o.ra etc.
test other radec setups, make default observer velocity consistent w/ setup default
further radec tests
test setphi, fix setphi applied to planarROrbit
test orbit.dim
test observing w/ Orbit instance, fix vz of the orbit
test a few more setups and ways to evaluate observed coordinates for Orbit; don't cover some stuff