Possible to set source directory default path?

[MatthewCroughan]

The docs I am working on have a source/_static/asciinema folder in which all casts will be placed. Instead of having to refer to this full path like this:

.. asciinema:: ../_static/asciinema/set-device-tags.cast

It would be great if we could just refer to it like this:

.. asciinema:: set-device-tags.cast

Perhaps it could be a config option?

sphinxcontrib_asciinema_defaults = {
       'path': source/_static/asciinema
}

[divi255]

added in a5451cc