Merge tag '3.1.1' into develop

Rel

* tag '3.1.1':
  [maven-release-plugin] prepare for next development iteration
  [maven-release-plugin] prepare release halbuilder-core-3.1.1
getLinksByRel no longer descends embedded representations.

Fixed #11.
[maven-release-plugin] prepare release halbuilder-core-3.1.2
[maven-release-plugin] prepare for next development iteration
Merge branch 'release/3.1.2'

* release/3.1.2:
  [maven-release-plugin] prepare for next development iteration
  [maven-release-plugin] prepare release halbuilder-core-3.1.2
  getLinksByRel no longer descends embedded representations.