Add newline to output

Signed-off-by: Jacob Kiers <code@kiers.eu>

src/main.rs

@@ -143,7 +143,7 @@ fn fetch_from_imap(
 ) -> Result<(), Box<dyn Error>> {
     create_directory(data_directory)?;
 
-    print!("Getting mail from {} for mailbox {}", server, username);
+    println!("Getting mail from {} for mailbox {}", server, username);
 
     let mut reader = ImapReader::new(server, port, username, password);