Merge branch '2.3.0-3.testing' of github.com:testkit/testkit-lite into 2.3.0-3.testing
Merge branch '2.3.0-3.testing' of github.com:testkit/testkit-lite into 2.3.0-3.testing
For fixing the bug TTS-812 (NoneType exception is raised when try to operate a null XML attribute "notes.text"), Add checking before operate this attribute.
Merge pull request #15 from Shao-Feng/2.3.0-3.testing

Add checking before operate a XML attribute which could be None.