* Service PTZ added
* Removed description loading during setup
* Fixed hound issues
* Changed attribute names
* Fixed pylint error
* Cleaning up the code
* Changed access to protected member to dict
* Removed new line added by mistake
* Fixed pylint error
* Fixed minors
* Fixed pylint caused by usage of create_type function
* Code made more concise
* Fixed string intendation problem
* Service name changed
* Update code to fit with the new version
* Set ptz to None if PTZ setup failed
* more precise exception used