Personal-knowledge-library

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- Adding missing dependency

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- Major refactoring of the library
- Adding a script to set up a new tenant
- Support for async Client
- Introduction of token management and session handling (breaking change)
- Minor fixes and improvements
- Adding sample for async client
- Adding more unit tests

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- Minor fix: No entities returned from Wikidata

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- Minor fix: Unclosed file handle
- Ontology configuration update

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- Improve handling of the ontology configuration file
- Handle aliases and labels in wikidata to thing mapping

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- Ontology configuration file can be now defined as parameter
- Adding support for force parameter in delete group