Proposing various open-source NLP/ML tools and libraries (C++ & Python) for inclusion in the index

All have been developed at Radboud University Nijmegen (Centre for Language Studies) and/or Tilburg University (Tilburg Centre for Cognition & Communication) in recent years, and remain under active development.

(I included colibri-core both under C++ and Python as it is both a native library as well as a Python binding)