Swap brachets only when a filetype is Clojure
Modify brackets swap

[] -> ()
{} -> []
() -> {}
Implement auto complete end brackets feature

ref.
  https://github.com/sue445/dotfiles/blob/38d5a5810efa612320e056a2e403279afe2d9d65/_vimrc#L49-L67

This reverts commit 8bb95f20035f957857a95a07f3fcf8946b4710e3.
Merge branch 'vim-clojure-configurations'