Merge tag '2.2.1' into develop

Rel

* tag '2.2.1':
  [maven-release-plugin] prepare for next development iteration
  [maven-release-plugin] prepare release halbuilder-api-2.2.1
API 3.0.1 - removed lookupRenderer for public interface
Add constant for hypertext cache pattern.

See https://tools.ietf.org/html/draft-kelly-json-hal-06#section-8.3
Merge pull request #8 from petejohanson/hypertext_cache_pattern

Add constant for hypertext cache pattern.
Initial updates for SourceRepresentations

Now - when reading a representation from a Reader you end up with a
SourceRepresentation which adds a getContent() method giving you access
to the original content that was downloaded.
Renamed to ContentRepresentation
Removed target directory from repo

Euu - how did this get in here to start with :(
Deprecated Set<> based toString methods in favor of varargs.
Removed SINGLE_ELEM_ARRAYS

Json writer will now ALWAYS expand the arrays in the content.

COALESCE_ARRAYS will now shrink _links and _embedded to a single object if included.
Merge branch 'feature/source-reps' into develop

* feature/source-reps:
  Removed SINGLE_ELEM_ARRAYS
  Deprecated Set<> based toString methods in favor of varargs.
  Removed target directory from repo
  Renamed to ContentRepresentation
  Initial updates for SourceRepresentations
Bumped Version for Major change alignment
Updated release plugin
[maven-release-plugin] prepare release halbuilder-api-4.0.1
[maven-release-plugin] prepare for next development iteration
Removed release files from repo that should never have been there.
Merge branch 'release/4.0.1'

* release/4.0.1:
  Removed release files from repo that should never have been there.
  [maven-release-plugin] prepare for next development iteration
  [maven-release-plugin] prepare release halbuilder-api-4.0.1
  Updated release plugin
  Bumped Version for Major change alignment
  Removed SINGLE_ELEM_ARRAYS
  Deprecated Set<> based toString methods in favor of varargs.
  Removed target directory from repo
  Renamed to ContentRepresentation
  Initial updates for SourceRepresentations
  Add constant for hypertext cache pattern.
  API 3.0.1 - removed lookupRenderer for public interface