2.3.0 release commit.
Fix adjacency handler for adding relationships with Direction.IN

Currently the relationships get set with Direction.OUT regardless of
what's specified on the annotation. A test for adding relationships
with an inward direction has also been added.
Merge remote-tracking branch 'upstream/master'
Added Java annotation handler
Added unit test for add incidence Direction.IN
Updated change log.
Merge pull request #39 from mikesname/fix_inward_add_adjacency_handler

Fix adjacency handler for adding relationships with Direction.IN
Merge pull request #40 from BrynCooke/fix_inward_add_adjacency_handler

Added unit test for add incidence Direction.IN
Frames 2.3.1 release commit.
Merge remote-tracking branch 'upstream/master'
2.4.0 branch.
Merge remote-tracking branch 'upstream/master'
GremlinJavaAnnotationHandler implementation