--- a/NEWS Tue Mar 04 16:07:55 2025 +0100 +++ b/NEWS Tue Mar 04 16:37:14 2025 +0100 @@ -22,6 +22,7 @@ filter_mset_mono_strong filter_mset_sum_list set_mset_sum_list[simp] + size_mset_sum_mset_conv[simp] New in Isabelle2025 (March 2025)