Fixed licensing and documentation
Renamed XmlDOMOperator to AbstractXmlDOMOperator. Created a simple XmlDOMOperator that is deprecated for backwards compatibility reason. It will be removed in the next release
Propagating exception up as we currently do not handle error tuples.
Merge branch 'dt-dev' of github.com:PramodSSImmaneni/Malhar into PramodSSImmaneni-dt-dev
Merge branch 'PramodSSImmaneni-dt-dev' into dt-dev