2.13.0

Changed

• New file usage logic for json_form_widget by @dafeder in #3730

Fixed

• Ensure datastore_import queue has time to process by @clayliddell in #3727
• The first element may not have index zero by @thierrydallacroce in #3680
• Consolidate metastore retrieve/range methods by @dafeder in #3733

Full Changelog: 2.12.3...2.13.0