Merge branch 'dev' of https://github.com/dcloudio/uni-app into dev

packages/vue-cli-plugin-uni/generator.js

 module.exports = (api, options, rootOptions) => {
   let version = '*'
   if (require('./package.json').version.indexOf('alpha') !== -1) {
-    version = '^1.0.0-alpha-22120190814001'
+    version = '^2.0.0-alpha-22420190823001'
   }
   api.extendPackage(pkg => {
     delete pkg.postcss

packages/vue-cli-plugin-uni/package.json

 {
   "name": "@dcloudio/vue-cli-plugin-uni",
-  "version": "0.9.533",
+  "version": "0.9.534",
   "description": "uni-app plugin for vue-cli 3",
   "main": "index.js",
   "scripts": {