updated version history

Author: shallcro

markdown/version_history.md

@@ -2,6 +2,7 @@
 
 | Date | Version | Note |
 |------|---------|------|
+| April 14, 2026 | v1.3 | Updated ICPSR input guidance for Geographic Coverage Area. |
 | April 11, 2025 | v1.2 | Updated field definitions to improve clarity. |
 | June 28, 2024 | v1.1 | Removed guidance regarding null entries for National Institute of Justice studies. Several fields previously required "None" when otherwise a field would be left blank. Updated internal guidance for 'external source id' and 'funding purpose' elements. Added 'study number' and distributor 'order' elements to address earlier oversights. |
 | Oct. 30, 2023 | v1 | Initial release and publication of the ICPSR Metadata Schema. |