Prep DT to handle SCAN timeseries

[Populustremuloides]

We have a SCAN in the lab, but we also have SCANs that are deployed long-term in streams. We should make a time-series version of the SCAN reader on DT so that it can read/integrate/store SCAN data.

[zacheliason]

which aspect of timeseries is the current SCAN reader on DT unable to handle?