[gnome-documents] Require Gepub 0.5

[Jeremy Bicha <jbicha src gnome org>]

commit d44503f21fedff9af3e13ec162b40f83dc083f3d
Author: Jeremy Bicha <jbicha ubuntu com>
Date:   Sat Aug 12 22:02:27 2017 -0400

    Require Gepub 0.5
    
    https://bugzilla.gnome.org/show_bug.cgi?id=786221

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index a4a1db8..cc3cac9 100644
--- a/configure.ac
+++ b/configure.ac
@@ -118,7 +118,7 @@ AX_CHECK_GIRS_GJS([Tracker], [2.0])
 AX_CHECK_GIRS_GJS([TrackerControl], [2.0])
 AX_CHECK_GIRS_GJS([WebKit2], [4.0])
 AX_CHECK_GIRS_GJS([Zpj], [0.0])
-AX_CHECK_GIRS_GJS([Gepub], [0.4])
+AX_CHECK_GIRS_GJS([Gepub], [0.5])
 
 GLIB_COMPILE_RESOURCES=`$PKG_CONFIG --variable glib_compile_resources gio-2.0`
 AC_SUBST(GLIB_COMPILE_RESOURCES)