Added
- [x] **Add** the method `remove_axiom` for removing an axiom from the ontology at `deeponto.onto.Ontology` (note that the counterpart `add_axiom` has already been available).
- [x] **Add** the method `check_named_entity` for checking if an entity is named at `deeponto.onto.Ontology`.
- [x] **Add** the method `get_subsumption_axioms` for getting subsumption axioms subject to different entity types at `deeponto.onto.Ontology`.
- [x] **Add** the method `get_asserted_complex_classes` for getting all complex classes that occur in ontology (subsumption and/or equivalence) axioms at `deeponto.onto.Ontology`.
- [x] **Add** the methods `get_asserted_parents` and `get_asserted_children` for getting asserted parent and children for a given entity at `deeponto.onto.Ontology`.
- [x] **Add** the method `check_deprecation` for checking an owl object's deprecation (annotated) at `deeponto.onto.Ontology`.
Changed
- [x] **Move** the spacy `en_core_web_sm` download into the initialisation of `OntologyVerbaliser`.
- [x] **Change** the method of getting equivalence axioms by adding support to different entity types at `deeponto.onto.Ontology`.
- [x] **Rename** the methods of getting inferred super-entities and sub-entities at `deeponto.onto.OntologyReasoner`:
- `super_entities_of` $\rightarrow$ `get_inferred_super_entities`
- `sub_entities_of` $\rightarrow$ `get_inferred_sub_entities`
Fixed
- [x] **Fix** the top and bottom data property iris (from "https:" to "http:") at `deeponto.onto.Ontology`.