Add new UNRELEASED section to CHANGELOG

Author: eigenbeam

CHANGELOG.md

@@ -1,8 +1,11 @@
+## UNRELEASED
+
+* PSS-692: Ensure longitude values of the generated polygons stay in-bounds [-180,180].
+
 ## v1.13.0rc0 (2025-09-17)
 
 * Issue 292: Exclude `.spo` files from polygon-generation logic, regardless of
   the value of the `spatial_polygon_enabled` flag in the `ini` file.
-* PSS-692: Ensure longitude values of the generated polygons stay in-bounds [-180,180].
 
 ## v1.12.0 (2025-09-15)