[slime-devel] reference card

Hi, I made a reference card for SLIME. I know that it is easy to look up commands using Emacs, but sometimes I forget that there are commands for what I want to do. It is written in LaTeX, with minimal dependencies. A PDF file is also included, it fits on a single page. If the developers consider this worthy of inclusion, I contribute it into SLIME under its current license. Best, Tamas