fix for get_db_prep_save requiring connection
timezones support
Use xpath() lookup method if find() fails
Include identifier in field parsing
Added special target field name "feed_label" that enables you to save the feed label to a model field.
Added an "identifier_fieldname" to JSON configuration - you can now map "unique" identifiers to any field, not only to "pk"
strip() all parsed values
bugfix
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