TODO:
- maintenance: Switch to using inside-out objects (probably Class- or Object- InsideOut)
- maintenance: scripts/clearpress to auto-generate tests & fixture framework
- maintenance: Improve migrations
- maintenance: Improve test coverage (currently at 81%)
- maintenance: Add regression tests
- performance: Config caching

284 - Class::Singleton support moved from ClearPress::driver to
      ClearPress::util. When running in a mod_perl environment
      supporting multiple different ClearPress applications, the
      driver would be a singleton per Apache child process, meaning
      applications would mistakenly share whichever database
      connection is first initialised. As drivers are not usually
      subclassed per-application (only by database back-end platform)
      the singleton support was moved into ClearPress::util. The util
      is commonly subclassed for applications so this should be a
      robust solution, particularly for shared environments.


278 - Support for posting XML

269 - Extended aspect handling:
      /batches/released/cluster.xml routes to
      app::view::batches::read_released_xml with a primary key of
      'cluster' by default, but if
      app::view::batches::list_released_cluster_xml exists that will
      be preferred.

    - Also fixed a niggle - /thing/15.xml;add mixed
      aspect+file-extension would previously have failed but should
      now be correctly routed to app::view::thing::add_xml

267 - Bugfix for aspect checking - previously 'update_*' aspects
      (e.g. update_xml) would have been incorrectly identified as a 'create'
      action. Similarly for 'delete_*' aspects.
    - Added SQLite checks to failing tests

255 - A bunch of new functional tests
    - Test-harness related stuff (t::request)
    - Test data for dummy templates and results

252 - Fixed generation of warnings.tt2 & view::error in bin/clearpress
    - Fixed Y/N on file overwrite in bin/clearpress
    - Auto-generate application-specific util as it's required by the singleton if not passed explicitly to objects
    - Fixed requestor->is_member_of authorisation check if is_member_of is not supported (default not authorised) in ClearPress::view
    - Fixed auto-generation of multiple has_a and has_many (missing whitespace) in bin/clearpress
    - Default RESTish methods (pass-through) for *_ajax and *_json to complement existing *_xml in ClearPress::view
    - Moved scripts/clearpress to bin/clearpress as it's more usual
    - Template caching

236 - driver support for bounded selects (currently basic string concatenation)

235 - Improved test resiliance w.r.t. optional dependencies

222 - ClearPress::driver is now a Class::Singleton. ** TAKE CARE ** if
      your application makes multiple database handles of the same sort
      - they need separate subclassing and will then be singletons
      themselves.

174 - Maintenance release - added missing dependencies to Makefile.PL

173 - Improved tests & code coverage for relation accessors (has_a,
      has_many, has_a_through, has_many_through etc), views and database
      drivers.

    - NEW BEHAVIOUR: database handling has started to be pushed into
      ClearPress::driver:: subclasses. You will commonly see transaction
      errors with applications built using older ClearPress which
      implement their own 'dbh' methods in util.pm .

    - NEW BEHAVIOUR: better handling of NULL/undef, zero and empty
      string may cause issues on applications which previously didn't
      check.

168 - Updated POD
    - Generation script now makes use of has_a and has_many
      friend-accessor-auto-constructors

157 - Improved error handling with some smarts about requested content
      types
    - 'packagemap' config section maps uri entity names to package
      subclasses for exceptions to the systematic naming rules, e.g.
      [packagemap]
      array_feature=feature::array

135 - belongs_to_through now supported in the data model
    - Added missing Config::IniFiles dependency. Hopefully more CPAN
      tests will now pass

132 - has_many_through and belongs_to now supported.
    - Easier access to template subsystem for streamed-output responses.

118 - Update now only saves fields which 'exist' in the object, meaning
      you don't have to force $object->load() before updating.
    - New hasa() and hasmany() for easier relationship definitions.
    - Models can now render ->as_xml() and as_json()
    - Tweaked route processing (action & aspect) to be safer and more
      consistent

99  - reworked url/file-extension & HTTP Accept header handling
      deprecated controller::process_uri in favour of process_request

87  - JSON response support

71  - Buffered output handling, better test coverage

12  - Added application builder in scripts/clearpress