[zenity] release: Prepare for 3.28.1

[Jeremy Bicha <jbicha src gnome org>]

commit 7fee2da8076affd41113f7e7d6e8e61f9ff036ab
Author: Jeremy Bicha <jbicha ubuntu com>
Date:   Mon Apr 9 20:03:34 2018 -0400

    release: Prepare for 3.28.1

 NEWS         |    3 +++
 configure.ac |    2 +-
 2 files changed, 4 insertions(+), 1 deletions(-)
---
diff --git a/NEWS b/NEWS
index c8af4a4..b13f8e6 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,6 @@
+Zenity 3.28.1
+       - Translation updates
+
 Zenity 3.28.0
        - Translation updates
 
diff --git a/configure.ac b/configure.ac
index d13afa6..9dd3a94 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,4 +1,4 @@
-AC_INIT([Zenity],[3.28.0],[http://bugzilla.gnome.org/enter_bug.cgi?product=zenity],[zenity])
+AC_INIT([Zenity],[3.28.1],[https://bugzilla.gnome.org/enter_bug.cgi?product=zenity],[zenity])
 
 AC_PREREQ([2.63])