5 files changed, 64 insertions, 2 deletions
diff --git a/src/shared/settings/default.js b/src/shared/settings/default.js
index f82db5a..9e1c202 100644
--- a/src/shared/settings/default.js
+++ b/src/shared/settings/default.js
@@ -27,6 +27,8 @@ export default {
     "u": { "type": "tabs.reopen" },
     "K": { "type": "tabs.prev", "count": 1 },
     "J": { "type": "tabs.next", "count": 1 },
+    "gT": { "type": "tabs.prev", "count": 1 },
+    "gt": { "type": "tabs.next", "count": 1 },
     "g0": { "type": "tabs.first" },
     "g$": { "type": "tabs.last" },
     "<C-6>": { "type": "tabs.prevsel" },
@@ -37,8 +39,8 @@ export default {
     "zi": { "type": "zoom.in" },
     "zo": { "type": "zoom.out" },
     "zz": { "type": "zoom.neutral" },
-    "f": { "type": "follow.start", "newTab": false },
-    "F": { "type": "follow.start", "newTab": true },
+    "f": { "type": "follow.start", "newTab": false, "background": false },
+    "F": { "type": "follow.start", "newTab": true, "background": false },
     "H": { "type": "navigate.history.prev" },
     "L": { "type": "navigate.history.next" },
     "[[": { "type": "navigate.link.prev" },
diff --git a/src/shared/settings/properties.js b/src/shared/settings/properties.js
index 37dc881..4bda8d6 100644
--- a/src/shared/settings/properties.js
+++ b/src/shared/settings/properties.js
@@ -5,12 +5,14 @@
 const types = {
   hintchars: 'string',
   smoothscroll: 'boolean',
+  adjacenttab: 'boolean',
 };
 
 // describe default values of a property
 const defaults = {
   hintchars: 'abcdefghijklmnopqrstuvwxyz',
   smoothscroll: false,
+  adjacenttab: true,
 };
 
 export { types, defaults };
diff --git a/src/shared/versions/index.js b/src/shared/versions/index.js
new file mode 100644
index 0000000..ee9f3b5
--- /dev/null
+++ b/src/shared/versions/index.js
@@ -0,0 +1,39 @@
+import * as storage from './storage';
+import * as releaseNotes from './release-notes';
+import manifest from '../../../manifest.json';
+
+const NOTIFICATION_ID = 'vimvixen-update';
+
+const notificationClickListener = (id) => {
+  if (id !== NOTIFICATION_ID) {
+    return;
+  }
+
+  browser.tabs.create({ url: releaseNotes.url(manifest.version) });
+  browser.notifications.onClicked.removeListener(notificationClickListener);
+};
+
+const checkUpdated = () => {
+  return storage.load().then((prev) => {
+    if (!prev) {
+      return true;
+    }
+    return manifest.version !== prev;
+  });
+};
+
+const notify = () => {
+  browser.notifications.onClicked.addListener(notificationClickListener);
+  return browser.notifications.create(NOTIFICATION_ID, {
+    'type': 'basic',
+    'iconUrl': browser.extension.getURL('resources/icon_48x48.png'),
+    'title': 'Vim Vixen ' + manifest.version + ' has been installed',
+    'message': 'Click here to see release notes',
+  });
+};
+
+const commit = () => {
+  storage.save(manifest.version);
+};
+
+export { checkUpdated, notify, commit };
diff --git a/src/shared/versions/release-notes.js b/src/shared/versions/release-notes.js
new file mode 100644
index 0000000..6ef2335
--- /dev/null
+++ b/src/shared/versions/release-notes.js
@@ -0,0 +1,8 @@
+const url = (version) => {
+  if (version) {
+    return 'https://github.com/ueokande/vim-vixen/releases/tag/' + version;
+  }
+  return 'https://github.com/ueokande/vim-vixen/releases/';
+};
+
+export { url };
diff --git a/src/shared/versions/storage.js b/src/shared/versions/storage.js
new file mode 100644
index 0000000..37603c8
--- /dev/null
+++ b/src/shared/versions/storage.js
@@ -0,0 +1,11 @@
+const load = () => {
+  return browser.storage.local.get('version').then(({ version }) => {
+    return version;
+  });
+};
+
+const save = (version) => {
+  return browser.storage.local.set({ version });
+};
+
+export { load, save };