Fix bug in Keys

src/input.rs

@@ -55,6 +55,8 @@ impl<I: Iterator<Item = Result<char, CharsError>>> Iterator for Keys<I> {
                 Some(Ok(c)) => Key::Alt(c),
                 Some(Err(_)) | None => Key::Invalid,
             }),
+            Some(Ok('\n')) | Some(Ok('\r')) => Some(Key::Char('\n')),
+            Some(Ok('\t')) => Some(Key::Char('\t')),
             Some(Ok('\x7F')) => Some(Key::Backspace),
             Some(Ok(c @ '\x01' ... '\x1A')) => Some(Key::Ctrl((c as u8 - 0x1  + b'a') as char)),
             Some(Ok(c @ '\x1C' ... '\x1F')) => Some(Key::Ctrl((c as u8 - 0x1C + b'4') as char)),