Scoban LISP

An exercise in C and interpreters. Also a joke that went too far.

Progress (in progress)

`car`	returns first element of a list	trivial
`cdr`	returns the rest of a list	trivial
`cons`	constructs a `Cell`	done
`list✝`	returns a `Cell` list from C array	`read_lst`
`read`	to read means to exist	almost done
`print`	produces a side-effect	trivial
`quote`	returns x
`atom`	true if arg is an atom/empty list	trivial
`eq`	tests whether two values are equal	trivial
`eval`	prepares a thing for application
`apply`	prepares a thing for evaluation
`lambda`	a greek letter
`cond`	not a letter