Changes

Add CI
Package released on PyPi and conda-forge
API compliant with scikit-learn
Fix some bugs:
- Issues related to int type on Windows
- Issues related to uninitialized variables

Known issues:

There are issues concerning the utilization of CPU cores.
It seems that there are some inconsistencies in the execution speed depending on the BLAS implementation.
The preprocessing is not working if the array is already in fortran format.