Begin removing dependency on MindTouch
Refactor Identification to depend on XmlNode
Continue to remove MindTouch dependency

Add encoding descript to testdata
Add test around encoding description
Populates encoding date
Refactor implementation of encoding-date
Remove mindtouch dependency from encoding
Remove mindtouch dependency from identification
Add tests around parts list
Refactoring Part object
Refactor part id
Refactor Part name
Refactoring

Add test around measures
Add test around measures count
Change measure to take an xml node
Refactor measure width implementation
Refactoring

Implement divisions in MeasureAttributes
Remove Clef's dependency on MindTouch
Implement key fifths
Remove key's dependency on MindTouch
Implement time beats property