message: Changed only show news when updae
diff: @@ -138,7 +138,7 @@ message.on('FETCH_DICT_RESULT', (data, sender, sendResponse) => {
  })
  // merge config on installed
  -chrome.runtime.onInstalled.addListener(() => {
  +chrome.runtime.onInstalled.addListener(({OnInstalledReason}) => {
  let isNew = false
  storage.sync.get('config', ({config}) => {
  if (config && config.dicts && config.dicts.all) {
  @@ -164,6 +164,7 @@ chrome.runtime.onInstalled.addListener(() => {
  })
  function showNews () {
  + if (OnInstalledReason === 'update') {
  chrome.notifications.create({
  requireInteraction: true,
  type: 'basic',
  @@ -177,6 +178,7 @@ chrome.runtime.onInstalled.addListener(() => {
  )
  })
  }
  + }
  function mergeConfig (config) {
  var base = JSON.parse(JSON.stringify(defaultConfig))
  