[gobject-introspection] Update the NEWS file

[Emmanuele Bassi <ebassi src gnome org>]

commit 0cfef69045f733073aff13744cf4b11ea956b8c8
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Thu Feb 8 11:35:56 2018 +0000

    Update the NEWS file
    
    Releases do not have a Git log, and we lack a way to give people
    packaging gobject-introspection an overview of what changed during
    the past development cycle.

 NEWS | 25 ++++++++++++++++++++++++-
 1 file changed, 24 insertions(+), 1 deletion(-)
---
diff --git a/NEWS b/NEWS
index ba814dc2..890e680d 100644
--- a/NEWS
+++ b/NEWS
@@ -1,4 +1,27 @@
-For NEWS for newer releases see git shortlog
+=== 2.56 ======================================================================
+
+    • Changes:
+      - Add _Float128 to the base C types
+      - Update annotations imported from GLib, and require GLib 2.56
+
+    • Bugs resolved:
+      - #764791 - gitypelib.c: increase #define MAX_NAME_LEN from 200 to 255
+      - #756921 - g-ir-scanner does not recognize _Thread_local
+      - #791991 - Broken shared-library value in gir files on *BSD when
+                  builddir includes the name of the library
+      - #791902 - Building using non-libtool (e.g., meson) on MinGW
+      - #629667 - MY_ENUM_VALUE = <constant> only works for last member
+      - #699354 - g-ir-compiler man page for --shared-library incorrectly
+                  says "lib" and ".so" should be removed
+      - #761985 - os.name can be wrong in some context
+      - #699328 - GI_TYPELIB_PATH is undocumented
+
+    • Contributors:
+      Ting-Wei Lan, Leslie Giles, Rico Tzschichholz, Christoph Reiter,
+      Nicola Fontana
+
+---
+For older releases, see the Git log
 ---
 0.6.3 22-jun 2009
     Bugs resolved: