Update deprecated references e.g. WP_PLUGIN_URL ==> plugins_url()

Hi Plugin Developers,

1) Many thanks for creating this plugin

2) For compatibility with TLS sites / WordPress MU / Content-Security-Policy

… would it be possible to update the plugin code to use:
plugins_url()
plugin_dir_url()
plugin_dir_path()
plugin_basename()
… instead of WP_PLUGIN_URL & WP_PLUGIN_DIR ?

e.g.

$ svn diff
Index: _modules/dashboard/dashboard.php
===================================================================
--- _modules/dashboard/dashboard.php	(revision 1210780)
+++ _modules/dashboard/dashboard.php	(working copy)
@@ -11,7 +11,6 @@
 	function __construct($plugin) {
 		// Plugin Details
         $this->dashboard = $plugin;
-        $this->dashboardURL = WP_PLUGIN_URL.'/'.str_replace(basename( __FILE__),"",plugin_basename(__FILE__));

 		// Hooks
 		add_action('admin_enqueue_scripts', array(&$this, 'adminScriptsAndCSS'));
@@ -26,7 +25,7 @@
     	// CSS
     	// This will only enqueue once, despite this hook being called by up to several plugins,
     	// as we have set a single, distinct name
-        wp_enqueue_style('wpbeginner', $this->dashboardURL.'css/admin.css');
+        wp_enqueue_style('wpbeginner', plugins_url('css/admin.css', __FILE__ ));
     } 	

 	/**
@@ -58,4 +57,4 @@
     	}
     }
 }
-?>
\ No newline at end of file
+?>

More info in these links:
https://ww.wp.xz.cn/ideas/topic/wp_plugin_url-doesnt-take-ssl-into-account
https://codex.ww.wp.xz.cn/Determining_Plugin_and_Content_Directories

Kind regards,
JJ

https://ww.wp.xz.cn/plugins/insert-headers-and-footers/