- REST Interface: Changed to REST V3.0:
  - Removed support for XML input/output format. Now only HTML and JSON are valid.
  - Unified support for "read" operations (single objects) with "list" (multiple
    objects) and removed obsolete code.
  - Refactored the library fieles
  - Started to write regression tests for test driven development
  - Fixed JSON output quoting
  - Fixed several other small issues