Added async and queue.  Removed slime.

OK, why remove ~slime~?  This is because the current MELPA version is
broken.  It is missing the ~swank~ directory.  So, to fix this
issue (and the instructions that follow assume that your are using
quicklisp and sbcl):

1. Remove the slime package in Emacs.
2. Fire up sbcl
3. Make sure things are up-to-date:
   (ql:update-all-dists)
   (ql:update-client)
4. Install quiclisp-slime-helper:
   (ql:quickload "quicklisp-slime-helper")
load and use slime from quicklisp