Added some tasks concerning user friendliness to TODO

* TODO (Future): added new tasks "Remember inputs", "rename
  rudel-unpublish-buffer", "terminate server" and "rename
  rudel-end-session"

TODO

@@ -1,4 +1,30 @@
 * Future
+** TODO Rename rudel-end-session -> rudel-leave-session
+   + Components ::
+   + Type :: task
+   + Priority :: minor
+   + Reporter :: Joe
+   + Assigned ::
+** TODO Have a function to terminate the server
+   + Components ::
+   + Type :: task
+   + Priority :: major
+   + Reporter :: Joe
+   + Assigned ::
+** TODO Rename rudel-unpublish-buffer -> rudel-unsubscribe
+   + Components ::
+   + Type :: task
+   + Priority :: minor
+   + Reporter :: Joe
+   + Assigned ::
+** TODO Remember inputs and use as default when prompting again
+   + Components :: user interface
+   + Type :: task
+   + Priority :: minor
+   + Reporter :: Joe
+   + Assigned ::
+   Remember answers to session information prompts and use them as
+   defaults for later prompts if default values cannot be inferred
 ** TODO Transmit text properties
    + Components :: multiple components affected
    + Type :: task