fidelity / loading fixes: (#159)

- Fidelity: Improved replay via unrewriting fixes of style urls, request/response urls (via wabac.js 2.15.3)
- Embeds: Support updating auth headers if custom headers provided in embed 'config'
- Dependencies: Update to wabac.js 2.15.3, wombat 3.4.6, Electron 23.1.1
- bump to 1.7.13

src/coll.js

@@ -289,6 +289,14 @@ class Coll extends LitElement
       ...json
     };
 
+    if (this.loadInfo && this.loadInfo.extraConfig && this.loadInfo.extraConfig.headers) {
+      const headers = this.loadInfo.extraConfig.headers;
+      await fetch(`${collApiPrefix}/updateAuth`, {
+        method: "POST",
+        body: JSON.stringify({headers})
+      });
+    }
+
     if (!this.collInfo.title) {
       this.collInfo.title = this.collInfo.filename;
     }