[sushi] release: prepare for 3.28.3

[Cosimo Cecchi <cosimoc src gnome org>]

commit 89e061c0fe311ca79eff78b254b1cca88f73fde2
Author: Cosimo Cecchi <cosimo endlessm com>
Date:   Mon Apr 23 16:11:31 2018 -0700

    release: prepare for 3.28.3

 NEWS         |    6 ++++++
 configure.ac |    2 +-
 2 files changed, 7 insertions(+), 1 deletions(-)
---
diff --git a/NEWS b/NEWS
index 8d64b97..ee3f316 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,9 @@
+3.28.3
+======
+
+- Fix another LibreOffice to PDF conversion regression (hopefully
+  for good this time)
+
 3.28.2
 ======
 
diff --git a/configure.ac b/configure.ac
index 0463af5..98ce0c2 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,6 +1,6 @@
 dnl -*- mode: m4 -*-
 AC_PREREQ(2.63)
-AC_INIT([sushi],[3.28.2],[],[sushi])
+AC_INIT([sushi],[3.28.3],[],[sushi])
 
 AC_CONFIG_HEADERS([config/config.h])
 AC_CONFIG_SRCDIR([src/main.c])