DerwenAI/kglab: v0.2.1 release on PyPi

2021-03-12

• tutorial proofreading and corrections; kudos @louisguitton
• better exception handling for RDF construction, parsing, serialization
• build_nx_graph() now requires a networkx.DiGraph directed graph as an argument
• add DOI to README, CITATION, and docs
• add contributor instructions
• neo4j integration via neosemantics; kudos @gauravjaglan
• replace GPUtil with pynvml as recommended by NVidia; kudos @kingmesal
• option to enable NVidia GPU use, if devices are available and libaries are installed
• using cuDF/cuGraph in lieu of pandas/networkx where possible; kudos @BradReesWork