Add release note for #3973 backported to 1.12.x

CHANGELOG.txt

@@ -53,6 +53,12 @@ Changelog
  * Fix: API listing views no longer fail when no site records are defined (Karl Hobley)
 
 
+1.12.3 (xx.xx.20xx) - IN DEVELOPMENT
+~~~~~~~~~~~~~~~~~~~
+
+ * Fix: API listing views no longer fail when no site records are defined (Karl Hobley)
+
+
 1.12.2 (18.09.2017)
 ~~~~~~~~~~~~~~~~~~~
 

docs/releases/1.12.3.rst

@@ -0,0 +1,16 @@
+=============================================
+Wagtail 1.12.3 release notes - IN DEVELOPMENT
+=============================================
+
+.. contents::
+    :local:
+    :depth: 1
+
+
+What's new
+==========
+
+Bug fixes
+~~~~~~~~~
+
+ * API listing views no longer fail when no site records are defined (Karl Hobley)

docs/releases/index.rst

@@ -7,6 +7,7 @@ Release notes
    upgrading
    2.0
    1.13
+   1.12.3
    1.12.2
    1.12.1
    1.12