chore: fixes bug with browser polyfill when sending heartbeats (#174)

* chore: fixes bug with browser polyfill when sending heartbeats

* chore: bump chrome version

src/manifests/chrome.json

@@ -26,5 +26,5 @@
     "page": "options.html"
   },
   "permissions": ["alarms", "tabs", "storage", "idle"],
-  "version": "3.0.3"
+  "version": "3.0.4"
 }

src/manifests/firefox.json

@@ -39,5 +39,5 @@
     "storage",
     "idle"
   ],
-  "version": "3.0.3"
+  "version": "3.0.4"
 }

src/utils/changeExtensionState.ts

@@ -1,3 +1,4 @@
+import browser from 'webextension-polyfill';
 import config, { ApiStates } from '../config/config';
 import changeExtensionIcon from './changeExtensionIcon';
 import changeExtensionTooltip from './changeExtensionTooltip';