[devhelp] Bump version for next development cycle

[Sébastien Wilmet <swilmet src gnome org>]

commit 43a280aaddf36be451bb1c0a46c978a4228c2cc3
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Fri Oct 12 14:57:11 2018 +0200

    Bump version for next development cycle

 meson.build | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/meson.build b/meson.build
index 21a220d4..9ff90baa 100644
--- a/meson.build
+++ b/meson.build
@@ -6,7 +6,7 @@
 project(
         'devhelp', 'c',
         meson_version : '>= 0.47',
-        version : '3.30.0'
+        version : '3.31.0'
 )
 
 GNOME = import('gnome')