Fixes #09 : added a SortingComparator that automagically sorts vertices prior to their loading. For that, only relevant properties are loaded. It has the one inconvenient that it can lead to OutOfMemoryError when navigating huge result graphs ... will see how it fails :-)
Added a little glitch to #09 : it will force vertices with all equal properties to not being considered equals.
Merge remote-tracking branch 'origin/master'