Add logs

src/nvim/redraw_handler.rs

@@ -324,7 +324,7 @@ pub fn call(
         "cmdline_block_hide" => ui.cmdline_block_hide(),
         "cmdline_pos" => call!(ui->cmdline_pos(args: uint, uint)),
         _ => {
-            println!("Event {}({:?})", method, args);
+            warn!("Event {}({:?})", method, args);
             RepaintMode::Nothing
         }
     };

src/shell.rs

@@ -971,6 +971,8 @@ impl RedrawEvents for State {
     }
 
     fn on_clear(&mut self) -> RepaintMode {
+        debug!("clear model");
+
         self.model.clear();
         RepaintMode::All
     }