 -- these globals can be set and accessed.
globals = {
    "json",
    "mympd"
}

-- these globals can only be accessed.
read_globals = {
    "mympd_arguments",
    "mympd_env",
    "mympd_state",
    "mympd_api",
    "mympd_caches_lyrics_write",
    "mympd_caches_images_write",
    "mympd_caches_update_mtime",
    "mympd_caches_tmp_file",
    "mympd_http_client",
    "mympd_http_download",
    "mympd_http_serve_file",
    "mympd_http_serve_file_from_cache",
    "mympd_util_imagescache_write",
    "mympd_util_notify",
    "mympd_util_log",
    "mympd_util_lyricscache_write",
    "mympd_util_hash",
    "mympd_util_urlencode",
    "mympd_util_urldecode",
    "mympd_util_sleep",
    "mygpio_gpio_blink",
    "mygpio_gpio_get",
    "mygpio_gpio_set",
    "mygpio_gpio_toggle"
}
