* Getting LICENSE.txt, etc. ready for public beta.
* Added reference to EDL SMPTE spec in README.
* Adding CLA PDFs
* Updated CLA PDFs.
* Added license header to all .py source files.

* Small fixes so you can use different versions of Qt.
* Fix to otioview when a timeline is empty.
* Show the OTIO JSON in the details pane.
* Try to guard against missing media_reference.available_range.
* Lots of cleanup, pep8, doc strings, etc.
* Add has_feature to adapter