- 'noto-mono.ttf' is from the Google Noto Fonts project
  <https://google.com/get/noto/>. It is licensed under the SIL Open
  Font License, Version 1.1.

- 'roboto-black.ttf', 'roboto-medium.ttf', 'roboto-regular.ttf' is
  from the Roboto font family designed by Christian Robertson. They
  are licensed under the Apache License, Version 2.0.