[gnome-flashback] bump version to 3.26.0, update NEWS

[Alberts Muktupāvels <muktupavels src gnome org>]

commit 5653a6bbbbd8eb5b0d1d0259120a0bf1ae0bb6bd
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Thu Oct 5 14:44:30 2017 +0300

    bump version to 3.26.0, update NEWS

 NEWS         |   13 +++++++++++++
 configure.ac |    2 +-
 2 files changed, 14 insertions(+), 1 deletions(-)
---
diff --git a/NEWS b/NEWS
index 5f88701..5d2de08 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,16 @@
+Version 3.26.0
+==============
+- Don't include selection overlay in screenshot. (#780358)
+- Don't exlude any desktop files from menus. (Balló György; #772959)
+- Don't disable password entry in polkit dialog. (LP:#1698994)
+- Fix missing cursor in CSD window screenshots. (#780394)
+- Fix a FIXME about ibus properties in input sources. (#788547)
+- Replace old display-config with new/updated monitor manager.
+- Imporve HiDPI support in screenshots.
+- Updated translations:
+  Anders Jonsson (sv), Dušan Kazik (sk), Fabio Tomat (fur), Kukuh Syafaat (id),
+  Marek Cernocky (cs), Mario Blättermann (de), Piotr Drąg (pl).
+
 Version 3.24.0
 ==============
 - Ignore invalid inhibitors in end-session-dialog. (Alberts Muktupāvels; #771759)
diff --git a/configure.ac b/configure.ac
index 288a23a..9986263 100644
--- a/configure.ac
+++ b/configure.ac
@@ -3,7 +3,7 @@ dnl Define version info
 dnl **************************************************************************
 
 m4_define([gf_major_version], [3])
-m4_define([gf_minor_version], [25])
+m4_define([gf_minor_version], [26])
 m4_define([gf_micro_version], [0])
 m4_define([gf_version], [gf_major_version.gf_minor_version.gf_micro_version])