RDF4J 2.4.0 Milestone 2

This is the second milestone build for the upcoming 2.4.0 release, which will include:

• Improvements to the RDF4J Console, including a command history, and new convert and export commands
• support for hierarchical JSON-LD writing
• RDF4J SparqlBuilder, a new fluent API for creating SPARQL queries in Java
• Lucene and Solr support upgraded to version 6.6
• ElasticSearch support upgraded to version 5.6
• An official RDF4J Server/Workbench docker image
• Improvements to the experimental SHACL implementation

For a list of changes see:

• https://github.com/eclipse/rdf4j/milestone/24?closed=1
• https://github.com/eclipse/rdf4j-storage/milestone/3?closed=1
• https://github.com/eclipse/rdf4j-tools/milestone/3?closed=1
• https://github.com/eclipse/rdf4j-testsuite/milestone/3?closed=1