Added test indices which were missing
Merge YATSM timeseries fix into branch
Fixed ugly f.close within a 'with open as f'; also some PEP8
Updated to latest YATSM version
Fixed bug and import convention for custom_form
Added LOWESS screen option, and work toward removed obs as metadata
Merging and prep work for dynamic metadata

Metadata right now is only changed on init of timeseries. Instead we
should also have the option of requesting an update. Will need to refactor
some code from controls_symbology.py into separate methods that can be
called by controller or something like that