Changes

Summary

1. more work on docs (commit: b375d90) (details)
2. minor (commit: ae787b1) (details)
3. Ontop 4.0.0 release (commit: 9986662) (details)

Commit b375d9041160d44b9c4baddb6b48244e8e510f52 by Lorenz Buehmann more work on docs (commit: b375d90)
	README.md (diff)
Commit ae787b1f28503e84ee4ffc9746ebdc1753d55407 by Lorenz Buehmann minor (commit: ae787b1)
	sansa-query-spark/src/main/scala/net/sansa_stack/query/spark/ontop/OntopSPARQLEngine.scala (diff)
Commit 9986662c478f889433f77d2d4e1bf5049e10470a by Lorenz Buehmann Ontop 4.0.0 release (commit: 9986662)
	sansa-query-spark/pom.xml (diff)