Implement eval for #cons{} ast
Implement eval for #cons{} ast

There is a problem now, which I will go about fixing next.

I currently do not get the value of a set, and if I eval a cons,
I will not get any proper value, since those intermediate values,
are not captured by the interpreter state.

To change this, I'll capture every single thing in the interpreter
state and properly get out my values as I need them.

saleyn/erlcfg