diff --git a/.hgtags b/.hgtags
--- a/.hgtags
+++ b/.hgtags
@@ -3,3 +3,4 @@ 1c590d34bf61e2ea12c71738e5a746cd74586157
 7eca4cfa8aad5fce9a04f7d8acadcd0452e2f34e 0.4d
 b4d0c3786ad3e47beacf8412157326a32b6d25a4 0.4c
 f40273b0ad7b3a6d3012fd37736d0611f41ecf54 0.5
+0a28dfe59f8fab54a5118c5be4f40da34a53cdb7 0.5b