Peebee

- model params set to None are now correctly disabled on init
- fixed bug in distance calculation for convenience.pdot_shk()
- model keyword args can now be passed into, for example, galpy potentials through model.alos([...], phi=my_phi) etc.
- icrs to gal, cart conversion using frame kwarg now works correctly
- added support for galpy potentials that cannot take arrays as inputs
- added RadialDensityOscillation model
- added noise models to the optimizer

- edited README.md
- made changes to docstrings to improve readthedocs
- added model.atan() and model.a_gal_sph() functions to calculate proper accelerations
- added convenience.dot and convenience.mags helper functions
- added CoxGomezSpiralArm potential to Models
- changed UniformAccel Model to UniformAlos
- added Uniform3DAccel Model
- fixed bug in models.a_gal_sph() by changing np.put -> np.place, which can take conditions instead of indices
- fixed bug in fit chi^2 statistic calculation, is now correct
- fixed bug in fix_arrays() wrapper that caused things to break when not running the docs generator

- put out public repo release on Pypi
- changed a bunch of readthedocs and documentation stuff
- changed the way that default/disabled parameters work to fix fitter.fit_model()
- added model.get_param_default() method for some
- fitter catches singular matrices in the hessian so you can debug
- added UniformAccel model

- bug fix in convenience.alos_obs()

- Added Plummer profile to models
- some bug fixes in models and convenience
- added optional parameters in models, reworked some class stuff to make that work
- QuillenVariableVcirc has now been absorbed into QuillenFlexible
- QuillenFlexible has been renamed OortExpansion
- added sun_pos kwarg to model.alos(), is also passed through anything that uses the convert_to_frame decorator
- altered sphinx code and directory setup so everything is on RTD now, no local build to worry about or push to git

- Added sampler.py module
- added radial power law and uniform samplers to sampler module
- added write_to_csv() to convenience module
- tweaked sphinx stuff
- added readthedocs page
- changed requirements in setup.py and docs/requirements.txt