[gjs] release: Prepare for 1.57.1

[Philip Chimento <pchimento src gnome org>]

commit 18c7725a145ad936a267d50055f732684d3035fb
Author: Philip Chimento <philip chimento gmail com>
Date:   Mon Apr 22 22:12:17 2019 -0700

    release: Prepare for 1.57.1

 NEWS | 12 ++++++++++++
 1 file changed, 12 insertions(+)
---
diff --git a/NEWS b/NEWS
index 30d0428b..626ac943 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,15 @@
+Version 1.57.1
+--------------
+
+- Closed bugs and merge requests:
+  * Various maintenance [!279, Philip Chimento]
+  * mainloop: Assign null to property instead of deleting [!280, Jason Hicks]
+  * Added -d version note README.md [!282, Nauman Umer]
+  * Extra help for debugger commands [#236, !283, Nauman Umer]
+  * Crash in BoxedInstance when struct could not be allocated directly [#240,
+    !285, Philip Chimento]
+  * Cairo conversion bugs [!286, Philip Chimento]
+
 Version 1.56.1
 --------------