Provide utility to reconstitute latest-and-greatest components (metadata, measurements, track) for a given tag deployment (dataset)

[lewismc]

EXTRACTION FOR THE BEST AVAILABLE INFORMATION for a given tag deployment
Metadata - the latest submission
Observations - the latest submission
Track - waypoints that have flag_as_reference set to TRUE

[tagtuna]

I have done a first-pass review and expand on the subject. It takes a bit more explaining, so it is documented here https://docs.google.com/document/d/1x87gVMIvs2jHuYL-wLelZbXyihZFRQmfcCaDRawSnX8/edit?usp=sharing. Pay attention to section 3 and 4