1.1.0

Added

• Entity.add_synonym method to create a new synonym and add it to an entity.
• @roundrepr now adds a minimal docstring to the generated __repr__ method.
• Ontology caches subclassing relationships to greatly improve performance of
  Term.subclasses.

Changed

• Entity subclasses now store their id directly to improve performance.
• Term.subclasses and Term.superclasses use collections.deque instead of
  queue.Queue as a LIFO structure since thread-safety is not needed.
• chardet result is now used even when prediction confidence is under 100%
  to detect encoding of the handle passed to Ontology.

Fixed

• SynonymType comparison implementation.
• Synonym.type getter crashing on type not being None.
• RdfXMLParser crashing on synonymtypedefs without scope specifiers.