promote new channel / recycle channel msgs to INFO

lib/server/connection.ml

@@ -457,7 +457,7 @@ let on_msg_join t name =
            DON'T try to make a new channel *)
         Error (nosuchchannel name)
     with Not_found ->
-      debug (fun m -> m "making new channel %S" name);
+      info (fun m -> m "making new channel %S" name);
       Ok (Chan.make name)
   in
   match Router.membership chan me with
@@ -495,7 +495,7 @@ let leave t mem ~from ~why =
   Router.part mem;
   if Chan.is_empty chan then
     begin
-      debug (fun m -> m "recycling empty channel %S" (Chan.name chan));
+      info (fun m -> m "recycling empty channel %S" (Chan.name chan));
       Chan.unregister chan ~router:t.router;
     end