LP#1588948 Release notes (auth prop. bib edit[or|_date])

Signed-off-by: Bill Erickson <berickxx@gmail.com>
Signed-off-by: Mike Rylander <mrylander@gmail.com>

diff --git a/docs/RELEASE_NOTES_NEXT/Cataloging/auth_prop_bib_update.adoc b/docs/RELEASE_NOTES_NEXT/Cataloging/auth_prop_bib_update.adoc
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+Authority Propagation Updates Bib Editor / Edit Date
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+When a bib record is automatically updated as a result of the
+modification of a linked authority record, the bib record's "Last Edit
+Data/Time" and "Last Editing User" fields will be updated to match the
+time of the update and the editor of the modified authority record.
+
+A new global flag is available to control this behavior called
+'ingest.disable_authority_auto_update_bib_meta' ("Authority Automation:
+Disable automatic authority updates from modifying bib record editor
+and edit_date").  When enabled, theses fields will not be updated.  By
+default, this setting is disabled.
+
+An additional speed improvement is included in this feature.  No attempt
+will be made to update linked bib records when the normalized heading of
+the modified authority record is unchanged by the authority record update.