[gnote] Bump to 3.21.0

[Aurimas Černius <aurimasc src gnome org>]

commit ef28d7b6a17a0f540c3c0bd6910ab5a57ee4b854
Author: Aurimas Černius <aurisc4 gmail com>
Date:   Sat Mar 26 13:44:10 2016 +0200

    Bump to 3.21.0

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index fb4167a..a4faeda 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,4 +1,4 @@
-AC_INIT(gnote, 3.20.0)
+AC_INIT(gnote, 3.21.0)
 AC_PREREQ(2.59)
 AC_CONFIG_SRCDIR(README)
 AM_INIT_AUTOMAKE([1.11 foreign subdir-objects dist-xz no-dist-gzip tar-ustar])