fixed refacto of this.buildosUrl

buildoz.js

@@ -12,9 +12,17 @@
  */
 
 class Buildoz extends HTMLElement {
+
+    // static is evaluated when the class is defined, therefore while buildoz.js is executing.
+    // therefore document.currentScript refers to buildoz.js (but not later!!)
+    static _buildozUrl = document.currentScript?.src ?? ''
+
     constructor(){
         super()              // always call super() first!
         this.attrs = {}
+
+        // Usefull for relative dependencies, to keep lib fully portable
+        this.buildozUrl = Buildoz._buildozUrl // was defined in the past
     }
         
     static get observedAttributes(){ //observable  attributes triggering attributeChangedCallback