Change format of input control file to a standard format?

The control file for mizuRoute is in a custom format rather than an industry standard format. When industry standard formats are used (such as XML, JSON, YAML, INI-config, etc.) readers and validators can also be used to handle the file, to read, write, change, and verify syntax. This can be very useful.

In bringing mizuRoute into CESM, we may get pushback unless a standard format is used. I just want to start discussing this to hear how important the file format for the control file is. If there is flexibility in the mizuRoute community maybe we'll just pick on and convert. If there is a desire to keep the same format we can start preparing our arguments. We could also possibly use different formats for standalone vs cesm-coupled.

We don't need to decide on this anytime soon, but should be thinking about it longer term.