Merge pull request #187 from AtomRain/master

Adding support for Neo4j 2.1.2
Merge pull request #194 from AtomRain/master

Fixing POM version
DATAGRAPH-487 - Handle unique fields that have to be converted correctly
DATAGRAPH-488 - Add Enum <-> Number converter
DATAGRAPH-481 - Updated changelog.
DATAGRAPH-487 - Handle unique fields that have to be converted correctly
DATAGRAPH-485 - Updated changelog.
DATAGRAPH-491 - Updated changelog.
DATAGRAPH-491 - Prepare 3.2.0.M1 (Evans M1).
DATAGRAPH-491 - Release version 3.2.0.M1.
DATAGRAPH-491 - Prepare next development iteration.
DATAGRAPH-491 - After release cleanups.
DATAGRAPH-492 - Adapted to deprecation removals in Spring Data Commons.

Related ticket: DATACMNS-469.