++++++++++++++++++
- Adds faster solver for Kepler's equation
- Improves automation of documentation and release process
- Removes most C++ Ops and replaces them with pre-compiled functions which allows the distribution of binary wheels
- Removes ``gp`` submodule; moved to new `celerite2 <https://celerite2.readthedocs.io>`_ package
- Deprecates some non-exoplanet-specific functions and distributions; moved to `pymc3-ext <https://github.com/exoplanet-dev/pymc3-ext>`_ package