message: Adds current viewport position in scrollback buffer to indicator status line.
diff: <li>Adds ability to highlight same words on double click via `profile.*.highlight_word_and_matches_on_double_click`.</li>
  <li>Adds color scheme key `indicator_statusline.foreground` and `indicator_statusline.background` to customize indicator statusline colors.</li>
  <li>Adds clock to indicator status line.</li>
  + <li>Adds current viewport position in scrollback buffer to indicator status line.</li>
  <li>EXPERIMENTAL: Adds VT extension to enable passive mouse tracking via `CSI ? 2029 h` / `CSI ? 2029 l`. Passive mouse tracking enables the application to get notified on mouse events while still allowing mouse selection.</li>
  <li>EXPERIMENTAL: Adds VT extension to enable text selection tracking via `CSI ? 2030 h` / `CSI ? 2030 l`.</li>
  </ul>
  