write can now open a monitor right after flashing

src/monitor.rs

@@ -21,8 +21,9 @@ impl Monitor {
 		Self { hooks } 
 	}
 
-	pub fn add_hook(&mut self, key: Key, desc: &'static str) {
+	pub fn add_hook(&mut self, key: Key, desc: &'static str) -> &mut Self {
 		self.hooks.push((key, desc));
+		self
 	}
 
 	pub fn run(&mut self, port: &mut SerialPort) -> Result<Key, Error> {
@@ -32,6 +33,7 @@ impl Monitor {
 		port.set_dtr(false)?;
 		port.set_rts(false)?;
 
+		println!();
 		println!("Monitor controls:");
 
 		for (key, desc) in &self.hooks {