Add New Similarity Functions

1.0.3-alpha

Add a coupla functions to Similarity class

Move Affinity Calculations to Stored Procedures

This is a completely new version which adds a load of stored procedures to take the place of reams of Cypher queries.

Guava fix

Lock guava to version 17 to preven plugin incompatibilities

Mahout-mr includes an ancient (11) version of Guava. There have been
quite a few backwards-incompatible changes since then, so trying to
use this plugin alongside anything with >14 failed.
Locking at 17 as this is the version the spatial plugin wants, and
seems to be stable so far.

Initial Development Pre-Release

Very much work in progress...