Remove version from styles and scripts, and add time version to style.css

bones.php

// remove WP version from css
add_filter( 'style_loader_src', 'bones_remove_wp_ver_css_js', 9999 );

// remove WP version from scripts
function bones_remove_wp_ver_css_js( $src ) {
	if ( strpos( $src, 'ver=' . get_bloginfo( 'version' ) ) )
        $src = remove_query_arg( 'ver', $src );
    return $src;
}

// register main stylesheet
wp_register_style( 'bones-stylesheet', get_stylesheet_directory_uri() . '/library/css/style.css', array(), time(), 'all' );