Mix Events with WP Posts and RSS Feeds

/**
 * Change the main query on the homepage and in non-Events RSS feeds so that
 * event posts are included in the results.
 *
 * @param WP_Query $query
 * @return WP_Query
 */
function eventPostMixin(WP_Query $query) {
    // Don't do anything on an event page (tribe_is_event() will not provide the
    // result you expect before the main query has finished executing)
    if (array_key_exists('eventDisplay', $query->query_vars)) return $query;

    // Add Tribe Events to the main homepage query and to any non-Tribe RSS
    // feeds
    if  ((is_home() and $query->is_main_query()) or (is_feed() and !tribe_is_event()))
        $query->set('post_type', array('post', 'page', TribeEvents::POSTTYPE));

    return $query;
}

add_filter('pre_get_posts', 'eventPostMixin');