v4.0.0

🎉 v4.0.0

✨New Features

• ✨ Add simple mini program support(see API), including getsessionkey from code, decrypt phone data...
• ✨ Reset old FileStore data when major wechat config(e.g appId) change on initialization

💣Breaking Changes

• ✂️ Drop node-v4 support, if you need node4 support, stick to wechat-jssdk@3
• 🙏 Use Promise in client.js, which will change the init process, see browser-side-usage
• ⬅️Export modules directly instead of module.exports in one big class, the {Wechat} here is like the old const Wechat = require('wechat-jssdk') to be backward compatible, which will compose all the sub modules together(like JSSDK, OAuth, MiniProgram)
  e.g const {Wechat, JSSDK} = require('wechat-jssdk')

🔧Improvements and Fixes

• 🔧Many internal refactoring
• ✂️Remove bluebird dependence
• ✂️Remove crypto-js, use native crypto
• ✂️Remove dist from repo, only build before publish
• 📦Significantly Reduce the npm package size when publish
• 💉Add mini program tests
• 💅Prettify not only js in lib
• 🐛Couple of MongoStore fixes
• 🐛Couple of payment api fixes(#26 #25)
• 🐛 Parse refund response to json (#29)
• 🐛 Fix event-stream incident, see npm blog
• 🚸 Migrate to npm package-lock from yarn.lock
• 📦 Use specific versions for all packages
• ✏️ Couple of doc updates
• 🔁Use date-fns to format date
• 🙈 Ignore some hard reached branches when doing the test coverage
• 🆙Use webpack4 to bundle client js
• 🆙Upgrade packages