Removed density1 tests. Added more checks to the coeffecients. Varied the a parameter and decreased the eps parameter to NFW tests, and other potentials with less accurate results.
Removed density1 tests. Added more checks to the coeffecients. Varied the a parameter and decreased the eps parameter to NFW tests, and other potentials with less accurate results.

jobovy/galpy,jobovy/galpy,jobovy/galpy,jobovy/galpy