if ( ! function_exists('dfa_release_channel') ) {
	function dfa_release_channel() {
		$raw = get_option('dfa_release_channel', 'stable');
		if (defined('DFA_RELEASE_CHANNEL') && DFA_RELEASE_CHANNEL) $raw = DFA_RELEASE_CHANNEL;
		$raw = sanitize_key((string)$raw);
		if ( ! in_array($raw, array('stable','beta','hotfix','dev'), true) ) $raw = 'stable';
		return (string) apply_filters('dfa_release_channel', $raw);
	}
}