Refactor CI scripts
Refactoring
libraries option in setup.py
Work around incompatible libm.so in anaconda distribution.
Adds a runge Kutta stepper
Work around for anaconda issue with libm.so inplace (drop -ffast-math)
Make rk4 stepper a little more usable.
Fix ci errors.
Only trigger drone on successful build [skip ci]
Merge pull request #23 from bjodah/better_ci

Refactor CI scripts