Equal operator for numbers is implemented. One for the `string’ type is needed.

The next stage will be the implementation of the `equal’ to expose those operators to the lisp side.

Make this default forms customizable through variables or something.

What I’m talkin’ about is this ugly default form list in `src/lisp.cpp’ This should be customizable through the user. Maybe by implementing this list as vector so that the user can add his forms easily by using a function (which must be implemented too).

Nothing done yet. :-)