Added the facts command and a failing test for it.
Added half of an implementation for the facts command.

I've updated the print-function for implied deftemplates to make
them print out structures like CLIPS does. There are still some
things that need to be changed though. For example, the clear
command should assert an (initial-fact) as f-0.
Finalized the implementation for the facts command.

I've also modified the test for clear since I'm adding (initial-
fact).