Possibly they are entirely working, but they are hard to debug because doing the numerical derivatives correctly is very tricky, especially shifting the mole fractions while keeping molar density constant. A new method might be needed for testing use only.

At one million indexes per second, half a million years to run out of indices

closes #33

Replace missing headers as needed

See #16

Refactor abstract model (and so much more)

Helpful for debugging clang problems

Fixes the compilation problems, I hope

This is weird..

Fixes a lot of compiler warnings

Had cast to wrong type