initial types creation
add override ==
modified parser test to check for RScheme symbol objects
fix comment test
objectify parser
move pry stuff to the bottom
added to_s methods to replace shceme_format
changed repl to use to_s instead of scheme_format
remove scheme_format
object-orientified environment
currently untested because evaluator is still using old style arrays
object orientified the evaluator

tests fail of course!
adding freatures to types
fix bug in environment
fix primitive cons
fix primitive cdr
mucking with evaluate_apply
in the middle of testing. stashing settings..
fix evaluate_apply
comment
fix evaluate_cond