[gjs/gnome-3-26] release: Prepare for 1.50.2

[Gitlab Administrative User <gitlab src gnome org>]

commit 9a97b89ac410091466961d8430ff4da399b83bbe
Author: Philip Chimento <philip chimento gmail com>
Date:   Tue Oct 31 09:07:05 2017 -0700

    release: Prepare for 1.50.2

 NEWS | 11 +++++++++++
 1 file changed, 11 insertions(+)
---
diff --git a/NEWS b/NEWS
index ac4d7f9..f787da1 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,14 @@
+Version 1.50.2
+--------------
+
+- Closed bugs and merge requests:
+
+  * tweener: Fix a couple of warnings [!5, Florian Müllner]
+  * legacy: Allow ES6 classes to inherit from abstract Lang.Class class [!6,
+    Florian Müllner]
+
+- Minor bugfixes [Philip Chimento]
+
 Version 1.50.1
 --------------