reconfigure terminals on DPI change (fixes #576)

app/lib/app.ts

@@ -1,4 +1,5 @@
 import { app, ipcMain, Menu, Tray, shell } from 'electron'
+import * as electron from 'electron'
 import { loadConfig } from './config'
 import { Window, WindowOptions } from './window'
 
@@ -21,6 +22,10 @@ export class Application {
         app.commandLine.appendSwitch('lang', 'EN')
     }
 
+    init () {
+        electron.screen.on('display-metrics-changed', () => this.broadcast('host:display-metrics-changed'))        
+    }
+
     async newWindow (options?: WindowOptions): Promise<Window> {
         let window = new Window(options)
         this.windows.push(window)

app/lib/index.ts

@@ -58,5 +58,6 @@ app.on('ready', () => {
             }
         ]))
     }
+    application.init()
     application.newWindow({ hidden: argv.hidden })
 })