Merge remote-tracking branch 'origin/master'

# Conflicts:
#	packages/core/src/config/index.js

packages/core/src/config/index.js

@@ -161,6 +161,7 @@ module.exports = {
         }
       },
       mapping: {
+        'assets.fastgit.org': 'usa',
         '*yarnpkg.com': 'usa',
         '*cloudfront.net': 'usa',
         '*github.io': 'usa',

packages/gui/src/bridge/update/backend.js

@@ -95,7 +95,7 @@ function updateHandle (app, win, beforeQuit, updateUrl, log) {
 export default {
   install (context) {
     const { app, win, beforeQuit, log } = context
-    let updateUrl = 'https://dev-sidecar.docmirror.cn/update/'
+    let updateUrl = 'http://dev-sidecar.docmirror.cn/update/'
     if (process.env.NODE_ENV === 'development') {
       Object.defineProperty(app, 'isPackaged', {
         get () {