[gnome-panel] bump libpanel-applet soname version

[Alberts Muktupāvels <muktupavels src gnome org>]

commit 464213c30d7dd8fb853997aed1a313c870558543
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Tue Mar 21 17:04:55 2017 +0200

    bump libpanel-applet soname version

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index f8c09d2..87be589 100644
--- a/configure.ac
+++ b/configure.ac
@@ -92,7 +92,7 @@ GLIB_GSETTINGS
 #   change to C+1:0:0
 # - If the interface is the same as the previous version, change to C:R+1:A
 
-LIB_PANEL_APPLET_LT_VERSION=2:0:0
+LIB_PANEL_APPLET_LT_VERSION=3:0:0
 AC_SUBST(LIB_PANEL_APPLET_LT_VERSION)
 
 LIBGNOME_PANEL_LT_VERSION=0:0:0