[glibmm] NEWS: Mention API additions in 2.40

[Murray Cumming <murrayc src gnome org>]

commit e289d513b1565d7f829d62d54bff6b629d760379
Author: Murray Cumming <murrayc murrayc com>
Date:   Mon Apr 14 09:14:10 2014 +0200

    NEWS: Mention API additions in 2.40

 NEWS |   33 +++++++++++++++++++++++++++++++++
 1 files changed, 33 insertions(+), 0 deletions(-)
---
diff --git a/NEWS b/NEWS
index b58e2de..08e4a85 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,36 @@
+2.40:
+
+API additions since 2.38:
+
+Glib:
+* Keyfile: Add save_to_file().
+  (Murray Cumming)
+* Add VariantDict.
+  (Murray Cumming)
+
+Gio:
+* Action: Add parse_detailed_name() and parse_detailed_name_variant().
+  (Kjell Ahlstedt)
+* Application: Add the handle-local-options signal.
+  (Murray Cumming)
+* ApplicationCommandline: Add get_options_dict().
+* MenuModel: Add signal_items_changed()
+  (Kjell Ahlstedt)
+* MemoryInputStream: Add add_data() taking a sigc::slot,
+  with a test.
+  (Kjell Ahlstedt) Bug #609946 (Daniel Elstner)
+* Add Notification.
+  (Kjell Ahlstedt) Bug #722896.
+* Settings: Add get_user_value() and get_default_value().
+  (Murray Cumming)
+* Socket: Add get/set_option().
+  (Murray Cumming)
+* TlsInteraction: Add invoke_request_certificate(),
+  request_certificate(), request_certificate_async() and
+  request_certificate_finish().
+  (Murray Cumming)
+
+
 2.40.0 (stable):
 
 * VariantType: Fix typo in VARIANT_TYPE_BYTESTRING_ARRAY value.