Fixed bind - was doing cons on env wrong.

Signed-off-by: Jason Kuster <unexpectedapocalypse@gmail.com>
Added method for adding new frame, as well as bind-deep

Signed-off-by: Jason Kuster <unexpectedapocalypse@gmail.com>
various fixes to make interpret_statement and interpret_sl work

Signed-off-by: Jason Kuster <unexpectedapocalypse@gmail.com>
fixed while, made some changes to if

Signed-off-by: Jason Kuster <unexpectedapocalypse@gmail.com>
Interpreter works on test code. Break/Continue untested, boxes unimplemented.

Signed-off-by: Jason Kuster <unexpectedapocalypse@gmail.com>