[pygobject] Update NEWS for 3.30.3

[Christoph Reiter <creiter src gnome org>]

commit 06a2c481b36b51a2bb0ffbfbb0eec6ecf2e177f4
Author: Christoph Reiter <reiter christoph gmail com>
Date:   Tue Nov 27 08:38:59 2018 +0100

    Update NEWS for 3.30.3

 NEWS | 11 +++++++++++
 1 file changed, 11 insertions(+)
---
diff --git a/NEWS b/NEWS
index 1520fbaf..0efa5de9 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,14 @@
+3.30.3 - 2018-11-27
+-------------------
+
+* GValue: fall back to the custom C marshaller to support fundamental types.
+  This makes GValue work with GstFraction. :issue:`280`
+* GValue: Work around wrong annotations for GVariant
+* Fix GObject attribute access during instance init which can lead to errors
+  with __getattr__ implementations of subclasses. This lead to criticals when
+  instantiating Gio.DBusProxy. :issue:`267`
+
+
 3.31.1 - 2018-11-17
 -------------------