chore: update version in package.json

package.json

@@ -1,6 +1,6 @@
 {
   "name": "iptvnator",
-  "version": "0.3.0",
+  "version": "0.4.0",
   "description": "IPTV player application.",
   "homepage": "https://github.com/4gray/iptvnator",
   "author": {
@@ -145,4 +145,4 @@
       "lcov"
     ]
   }
-}
+}