* make guile/gtk/webkit dep optional (i.e., --disable-guile, --disable-webkit,

--with-gui=none); bump version to 0.9.8.5-dev4

TODO

@@ -1,6 +1,5 @@
 * TODO (fixes, ideas, etc.)
 
-
 ** Future stuff
 
 *** mu
@@ -10,7 +9,6 @@
   - put threading information in the database, and enable getting the complete
      threads when searching
   - refactor fill_database function in test cases
-  - make guile/gtk/webkit dependency optional
 
 *** mu4e
 
@@ -50,8 +48,8 @@
   - *FIX* fix for strings where len (g_utf8_strdown (str)) > len (str)
   - make sure marks correspond to the *current* message in message view (see
     https://github.com/djcb/mu/issues/26)
-  - *FIX* don't remove unknown message flags when moving (see
-    https://github.com/djcb/mu/issues/20)
+  - *FIX* don't remove unknown message flags when moving
+  - make guile/gtk/webkit dependency optional