fix: initialise plugin after 'plugins_loaded' hook

Fix #189

src/footnotes.php

@@ -113,7 +113,17 @@ require_once dirname( __FILE__ ) . '/includes.php';
 $l_str_plugin_file = 'footnotes/footnotes.php';
 add_filter( "plugin_action_links_{$l_str_plugin_file}", array( 'Footnotes_Hooks', 'get_plugin_links' ), 10, 2 );
 
+/**
+ * Initialises and runs the Plugin.
+ *
+ * This takes place after the `plugins_loaded` hook, so that
+ * other Plugins may filter options.
+ *
+ * @since 2.7.4
+ */
+add_action( 'plugins_loaded', function() {
 	// Initialize the Plugin.
 	$g_obj_mci_footnotes = new Footnotes();
 	// Run the Plugin.
 	$g_obj_mci_footnotes->run();
+});