Precession

New code

Python 3 now supported (hurray!). By default, finalspin now returns more updated result by Hofmann, Barausse and Rezzolla 2016.

Clarifications on typos in Eq. (36) and (37) of [arXiv:1605.01067](https://arxiv.org/abs/1605.01067). See help(precession) for more information.