2018-06-14, Version 2.9.1 @dead-horse

Notable changes

• perf

  • improve set type performance

• docs

  • fix socketio's browser demo
  • add Messenger in tsd

Commits

• [1a820bd44] - perf: improve set type performance by lru cache (#2697) (fengmk2 <fengmk2@gmail.com>)
• [239ce03ef] - docs: fix socketio's browser demo (#2645) (xcold <lxstart@outlook.com>)
• [73ca1b7a3] - chore(typings): add Messenger (#2688) (waiting <waiting@xiaozhong.biz>)