* 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.
* Change the opening commands to the tag-matchlist commands.
* Stop using taglist() so we don't have to worry about &l:tags.
* Persistent caching for tags.
* Continue #27.
* Save and restore &l:tags when creating a new buffer,
workaround for easytags.vim changing the buffer's &l:tags
and allow using <c-x> <c-t> <c-v> and <cr> to open file.
* New caching method, remove the need for <F5>.
* Continue #27.
