Row importer knows how to read codes
Models have batches
Dry out nil values code
Row importer calculates the status so you don't have to
Plot uniqueness is performed by the db

Cuts down on number of requests
CnCurves actually record the date and label field
Row importer exposes activerecordy batch methods
Row importer performs a check to see if override is possible

If not then safely jump out before causing damage
Combined schema updates
Specs update to match new interfaces
Fix UTF-8 test file