[glibmm] 2.57.1

[Kjell Ahlstedt <kjellahl src gnome org>]

commit 176e054b180f476fea9e2d63e19b6c2a1c297c61
Author: Kjell Ahlstedt <kjellahlstedt gmail com>
Date:   Mon Mar 26 11:53:56 2018 +0200

    2.57.1

 NEWS |   16 ++++++++++++++++
 1 files changed, 16 insertions(+), 0 deletions(-)
---
diff --git a/NEWS b/NEWS
index 7de6b59..02e0bf4 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,19 @@
+2.57.1: (unstable):
+Distro packagers should probably not package this yet.
+
+Gio:
+* DataOutputStream::put_string(): Don't pass std:string by value
+  (Kjell Ahlstedt)
+
+gmmproc:
+* Add _MEMBER_SET_STR() macro
+  (Pavlo Solntsev) Bug #793778
+
+Build:
+* Change the ABI to glibmm-2.58
+  (Kjell Ahlstedt)
+
+
 2.55.2: (unstable):
 Distro packagers should probably not package this yet.