* Extend jump-to-open-buffer to use <c-t> when jump_to_buffer = 2.
Only works for buffers opened in another tab. Suggested by @hail2u.
* Add g:ctrlp_default_cmd, option to reuse the default mapping for a
different command. Close#57.
* Add g:ctrlp_custom_ignore. Close#58.
* More mappings for different types of :cd
+ <cr> change the local working directory inside ctrlp.
+ <c-t> change the global working directory. (exit ctrlp)
+ <c-v> change the local working directory for the current window. (exit ctrlp)
+ <c-x> change the global working directory to |CtrlP|’s current local working
directory (exit).
* Some clean up.
