JRDF GUI 0.3 Released

An important bug in JRDF's SPARQL project operation was found so I've released JRDF GUI 0.3 to fix it. There are also a couple of minor enhancements to do with some code cleanup including an increase in speed (about 25% for some queries). I've also started testing it against the new DAWG test cases and the relevant OPTIONAL and UNION ones have passed so far (I haven't tested them all).