bump sesame and slf4j versions
remove aduna repository, as sesame-2.7 is going to be deployed to sonatype and maven central
add sonatype snapshot repository to fetch sesame-2.7-SNAPSHOT artifacts
remove aduna-commons packages that are not used independent of sesame
bump to sesame-2.7.0-beta2-SNAPSHOT
add new ValueFactory methods to Any23ValueFactoryWrapper
modify N3 mimetype to match current W3C team submission
add changes since beta2
import sesame-rio-nquads package into nquads module
add log4j properties file to nquads module
replace NQuadsWriter as a thin wrapper over sesame-rio-nquads writer
fix test that relies on the NQuadsWriter expanding namespaces, when this is never necessary with the Sesame API, as namespaces are always expanded automatically inside of the org.openrdf.model.URI interface, and in addition, N-Quads has never, and will never have, any support for namespaces. If that happens it will be as an extension to Turtle, which will be separate from N-Quads as N-Quads is by design a very thin wrapper over N-Triples, which will also never have namespace/prefixes
add FIXME note about N-Quads parser catching all Exceptions
fix use of relative URLs in test1.nq that is designed to only test cases from the NQuads grammar
convert NQuadsParser to override sesame-rio-nquads parser with UTF-8 support for InputStreamReader constructor
make NQuadsParserTest pass, including always having an rdfHandler, ignoring column numbers as they are not supported, removing test for relative URL as it is not in the NQuads specification, and fixing blank node identifiers that start with a number, when the specification says they must start with a letter
fix test that attempted to parse an nquads file with no newlines in it, against the specification
migrate NQuadsParserTest to make it use strict datatype handling

apparently previously a test with a non-XSD datatype that should have
been failing was not failing

if non-XSD datatypes need to be supported now, when datatype
validation/verification is enabled, they need to have custom
org.openrdf.rio.DatatypeHandler implementations
Switch off verification for now as otherwise DBPedia will be
inaccessible
bump to sesame-2.7.1-SNAPSHOT to test out DBPedia datatype handler