althonos/pronto: 2.2.0

Added

• threads parameter to Ontology constructor to control the number of threads used by parsers supporting multithreading (OBO and OBO JSON at the moment).
• Deprecation warnings for suspected uses of the is_a pseudo-relationship since subclasses/superclasses is now to be handled by the owner Ontology.
• Support for subclass/superclass edition directly from the objects returned by Term.subclasses() and Term.superclasses(). (#84) ### Changed
• Updated fastobo to v0.8, which reduce memory footprint of identifiers, and improves the parser speed.
• Improved OBO parser performance using threading plus zero-copy validation of identifiers on Xref instantiation.
• Improved performance in debug mode by having the typechecker only extract the wrapped function signature once. ### Fixed
• OBO parser crashing on files containing idspace clauses in their headers.
• Reference management issue with binary operations of TermSet. ### Removed
• nanoset depency, which was not useful anymore in Python 3.8 and caused issues with multithreading when processing OBO frames in parallel.