Enable to work with `track-state` middleware

[liquidz]

Branched from clojure-emacs/cider#82

track-state middleware will send a huge data after requiring namespace, and it take times and lead vim-iced's hang-up.

Currently iced command is excluding track-state middleware intentionally. https://github.com/liquidz/vim-iced/blob/0.9.2/clj/iced_repl.clj#L4-L18

Related issue at CIDER: https://github.com/clojure-emacs/cider-nrepl/issues/806