increment version to v0.3.2

better set compat

use build file to ensure python3.7

this seems to generally lead to an issue with conflicts between the julia and conda versions of mkl for this reason we uninstall numpy and install nomkl so that the python packages don’t try to install mkl

Merge pull request #44 from ReactionMechanismGenerator/splines

Replace Dierckx with SmoothingSplines

add julia compat upperbound

remove Pkg dependency