Prep Plugin for release on WordPress.org (#23)

* Update translation text domain
* Escape everything that should be escaped.
* Add nonce checks where needed.
* Sanitize all inputs.
* Apply Code style changes across the codebase.
* Correct many deprecation notices.
* Optimize load order of many filters.
* Add Proper Build script
* Use emojii flags
* Fix i18n deprecation  notice for translating too early
* Put all scripts in footer and load async

inc/class-wp-ultimo.php

@@ -175,11 +175,6 @@ final class WP_Ultimo {
 		 */
 		$this->scripts = WP_Ultimo\Scripts::get_instance();
 
-		/*
-		 * Checks Sunrise versions
-		 */
-		WP_Ultimo\Sunrise::manage_sunrise_updates();
-
 		/*
 		 * Loads tables
 		 */
@@ -205,11 +200,20 @@ final class WP_Ultimo {
 		 */
 		do_action('wp_ultimo_load');
 
+		add_action('init', [$this, 'after_init']);
+	}
+
+	public function after_init() {
 		/*
 		 * Loads admin pages
 		 * @todo: move this to a manager in the future?
 		 */
 		$this->load_admin_pages();
+
+		/*
+		 * Checks Sunrise versions
+		 */
+		WP_Ultimo\Sunrise::manage_sunrise_updates();
 	}
 
 	/**