These webfont files are derived from IBM Plex and are used only by the static
documentation site.

Source: https://github.com/IBM/plex
License: SIL Open Font License, Version 1.1. See LICENSE.txt in this directory.

The CSS exposes the files with local `Bilig Sans`, `Bilig Condensed`, and
`Bilig Mono` family names rather than IBM's reserved `Plex` font name.
