Made the Groovy CypherParser import optional in...

preparation for its removal in 1.8+.
Fixed select_related to handle changes in Cypher..

matching in 1.8+.
Test against Neo4j 1.8.1. Drop support for 1.5.
Fixed a bug where select_related choked on...

nodes from outside the neo4django hierarchy, or of a model not loadable
by Django.
Added a __len__ and a to_dicts convenience...

method to Neo4jTable.
Added further util methods to Neo4jTable.
Fixed a missing import in Neo4jTable.