Version 2.2

[kngwyu]

• trait bound Completion based on trait bounds #939
• support impl trait
• get_type command(Add get-type command #730)
• 2018 style path support(find-definition requires extern crate in 2018 edition #916, Visibility #923) (assigned to me)
  • find-definition requires extern crate in 2018 edition #916
  • Visibility #923
• associated type in trait (Provide completions for associated types #784)
• filecache for rls
• extern crate completion
• Resolve windows&rls issue

[letmutx]

I would like to pick impl trait support; Thanks!