[gnome-terminal] Post release version bump

[Christian Persch <chpe src gnome org>]

commit f6906dfda1bc20ac11777d71616ac19fe52a2fa4
Author: Christian Persch <chpe src gnome org>
Date:   Mon Feb 4 23:52:17 2019 +0100

    Post release version bump

 configure.ac | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/configure.ac b/configure.ac
index 3d89d9f9..6408a3cf 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,6 +1,6 @@
 m4_define([gt_version_major],[3])
 m4_define([gt_version_minor],[31])
-m4_define([gt_version_micro],[90])
+m4_define([gt_version_micro],[91])
 m4_define([gt_version_extra],[])
 m4_define([gt_version],[gt_version_major().gt_version_minor().gt_version_micro()gt_version_extra])