[json-glib] Start filling out the NEWS for 1.4

[Emmanuele Bassi <ebassi src gnome org>]

commit bd072d993ffc9c45c0b74c8efa7541ae028ce865
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Sat Mar 18 17:46:28 2017 +0000

    Start filling out the NEWS for 1.4

 NEWS |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/NEWS b/NEWS
index d71c068..17d7727 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,7 @@
+Overview of changes for 1.4
+==============================
+• Use Meson as the only build system
+
 Overview of changes for 1.2
 ==============================
 • Add simple wrapper functions for JsonGenerator and JsonParser to