CHANGES IN VERSION 1.99.4
------------------------
   o caching the RDS version of ontology_index so setup_entities2() is fast after first call
   o exploring role for bioregistry from pypi

CHANGES IN VERSION 1.27.1
------------------------
   o added search_labels(), to use owlready2 search facility on term labels

CHANGES IN VERSION 1.25.0
------------------------
   o introducing owl operations, relying on reticulate

CHANGES IN VERSION 1.2.0
------------------------
   o vignette, minicorpus updates