Use selector.exists in dc_clean_invalid_dates prior to converting
Added support for media list for Smithsonian ingestion.
Merge branch 'develop' of github.com:dpla/ingestion into develop
Fixed object field for Smithsonian data.
Remove deepcopy from primo-to-dpla module
Task #4386, do not map contributor field
Task #4387, Remove trailing periods from spatial fields
Merge branch 'develop' into internet_archive
removed unused code from IA mapping
internet archive ids downloader
4375 - Normalize 'United States of America' to 'United States'
Improved smithsonian geocoding
Merge branch 'develop' of ssh://github.com/dpla/ingestion into develop
NYPL fixes

- Update cleanup_values to remove whitespace after/before
  opening/closing parentheses and add contributor to default fields
- Update mods_to_dpla to properly set NYPL contributor
- Updated poll_profiles to include itemLink field in record for
  NYPL
- Update mods_to_dpla to set isShownAt using itemLink for Lawrence
  collection records,but use a placeholder for Emmet collection
  items
- Update mods_to_dpla to set the title field to the last titleInfo
- Use set_prop to set NYPL sourceResource/rights
Fixed a bug with stateLocatedIn field for NARA.
Place unset logic in unset_prop

- Update profiles to use unset_prop
- Add condition to unset_prop
- Unset description in BHL if value is a digit
Unset MDL dataProvider before copying publisher to it
Merge branch 'develop' of github.com:dpla/ingestion into develop
Remove sets_prop module and test
Improved accuracy of minnesota geocoding