Default TAB_FIRST mapping

src/background/tabs.js

@@ -101,5 +101,5 @@ const reload = (current, cache) => {
 
 export {
   closeTab, reopenTab, selectAt, selectByKeyword, getCompletions,
-  selectPrevTab, selectNextTab, reload
+  selectPrevTab, selectNextTab, selectFirstTab, reload
 };

src/shared/default-settings.js

@@ -28,6 +28,7 @@ export default {
     "u": { "type": "tabs.reopen" },
     "K": { "type": "tabs.prev", "count": 1 },
     "J": { "type": "tabs.next", "count": 1 },
+    "g0": { "type": "tabs.first", "count": 1 },
     "r": { "type": "tabs.reload", "cache": false },
     "R": { "type": "tabs.reload", "cache": true },
     "zi": { "type": "zoom.in" },