uncomment action should uncomment multiple comment strings in bulk

[tyru]

On filetype=lisp

current

;; (print 'hi) -> <Plug>(caw:i:toggle) -> ; (print 'hi) -> <Plug>(caw:i:toggle) -> (print 'hi)

expected

;; (print 'hi) -> <Plug>(caw:i:toggle) -> (print 'hi)

[tyru]

hmm, this should be necessary if #18 is implemented.
And I think this may result in unexpected case for a user.
(In this case the behavior is "expected behavior" though...)