PLUTO Enhancements

[fvankrieken]

Semi-freeform discussion for logging ideas for enhancements to the transformation logic of PLUTO. We'll spin off actual issues off of this when work is scoped

[croswell81]

Update PLUTO data dictionary by adding a note or symbol that indicates if a field is updated during minor releases. You can see a list of fields in the PLUTO readme file in the "What IS PLUTO?" section.