several smaller bug fixes
update sympy2c version
code cleanup
New version with fully rewritten code generator
support for massive neutrinos (EH and Boltzmann)
wCDM
RSA
clean up
Release accompanying https://arxiv.org/abs/2005.00543
Rewrite of the Boltzmann solver
Internal release to the group
Damping of Boltzmann equations
Using HOPE framework
First release on PyPI.