JSON -> XML conversion begginings.

    - prepared environment - libraries, files, etc.
    - tried out Jansson
JSON -> XML conversion complete.

    - JSON -> XML conversion is complete, XML output is printed on
      stdout
    - the code should be refactored and there are quite a few places
      where memory management should be repaired
Changed JSON -> XML conversion behaviour.

    - JSON -> XML conversion now does not create any XML
      attributes in accordance to libnetconf
Finished XML -> JSON conversion.

    - XML -> JSON conversion has been finished but still needs to
      be properly tested. Basic examples work.