feat(changelog): changelog inside application

src/background/menu/about_menu_template.js

@@ -0,0 +1,38 @@
+import { app, BrowserWindow, shell } from "electron";
+import path from "path";
+import url from "url";
+
+export const aboutMenuTemplate = {
+  label: "About",
+  submenu: [
+    {
+      label: "Changelog",
+      accelerator: "CmdOrCtrl+]",
+      click: () => {
+        const win = new BrowserWindow({
+          parent: BrowserWindow.getFocusedWindow(),
+          modal: true
+        })
+        win.setMenu(null)
+        win.loadURL(url.format({
+          pathname: path.join(__dirname, "app.html"),
+          protocol: "file:",
+          slashes: true
+        }))
+        win.webContents.on('did-finish-load', () => {
+          win.send('url', '/changelog')
+        });
+
+        const handleRedirect = (e, url) => {
+          if(url != win.webContents.getURL()) {
+            e.preventDefault()
+            shell.openExternal(url)
+          }
+        }
+        
+        win.webContents.on('will-navigate', handleRedirect)
+        win.webContents.on('new-window', handleRedirect)
+      }
+    }
+  ]
+};