Merge tag '3.1.2' into develop

Rel

* tag '3.1.2':
  [maven-release-plugin] prepare for next development iteration
  [maven-release-plugin] prepare release halbuilder-core-3.1.2
Don't depend on SNAPSHOT.

Odd - I'm surprised the maven release plugin let this slide...
[maven-release-plugin] prepare release halbuilder-core-3.1.3
[maven-release-plugin] prepare for next development iteration
Merge branch 'release/3.1.3'

* release/3.1.3:
  [maven-release-plugin] prepare for next development iteration
  [maven-release-plugin] prepare release halbuilder-core-3.1.3
  Don't depend on SNAPSHOT.