fix(core): update

ts/00_commitinfo_data.ts

@@ -3,6 +3,6 @@
  */
 export const commitinfo = {
   name: '@pushrocks/smartproxy',
-  version: '3.0.3',
+  version: '3.0.4',
   description: 'a proxy for handling high workloads of proxying'
 }

ts/smartproxy.classes.networkproxy.ts

@@ -310,6 +310,14 @@ JNj2Dr5H0XoLFFnvuvzcRbhlJ9J67JzR+7g=
     this.httpsServer.listen(this.port); */
   }
 
+  public async addDefaultHeaders(headersArg: {
+    [key: string]: string;
+  }) {
+    for (const headerKey of Object.keys(headersArg)) {
+      this.defaultHeaders[headerKey] = headersArg[headerKey];
+    }
+  }
+
   public async stop() {
     const done = plugins.smartpromise.defer();
     this.httpsServer.close(() => {