Add release notes for CSSMin bug fix

Follows-up 5333d63cb.

Change-Id: Ib504500308630daa1051c21da8721b3058d8d793

diff --git a/RELEASE-NOTES-1.31 b/RELEASE-NOTES-1.31
index 46b4946..4912a2d 100644 (file)
--- a/RELEASE-NOTES-1.31
+++ b/RELEASE-NOTES-1.31
@@ -130,7 +130,8 @@ production.
 * mediawiki/at-ease was replaced with wikimedia/at-ease.
 
 === Bug fixes in 1.31 ===
-* (T90902) Non-breaking space in header ID breaks anchor
+* (T90902) Non-breaking space in header ID breaks anchor.
+* (T189375) CSSMin now allows unquoted urls in `url()` syntax to start with a space.
 
 === Action API changes in 1.31 ===
 * (T185058) The 'name' value to tgprop for action=query&list=tags has been