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-json-3.1.2
Fixed test resource verison
Also generate single elem links arrays

( i hope this is what the pull req. did - I didn't look close enough )
[maven-release-plugin] prepare release halbuilder-json-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-json-3.1.3
  Also generate single elem links arrays
  Fixed test resource verison