Throw OWLParserException on JSON errors


Don't make it look like an IOException (as JsonParseException is
subclass) - as this blocks loading of other formats like Turtle.
Handle newlines in literals when making n-quads
generate json-ld triples directly rather than the n-quad hack
handle bnodes in @id
idForResource
nquads round-trip to make rdf:List native
scm and distributionManagement
Example (to be included in README)
Organize imports
README: Complete example
Clojars repository (not really needed)