Move fitting code to its own class
Add node conversion function
Update comments
Add stub for linear_to_cubic function
Add function to convert data to a python list
Move sample mesh files to test dir
Add test problem file
Update nodes to list converter
Add data_mirror function and unit test
Prefer PyQt4 over PySide
Fix typo
Use super to call base class constructor
Add updateGL to force a view update on mouse release
Add selection group name
Add Enaml UI