create scheme-version version and add README.md
implemented basic env manipluator, and test it using unit-test
defined basic type structures, and add test case for that
finisded skeleton of eval and apply
add quote, backquote, comma and comma-at's support, also add
test-eval.scm
now we can use many basic expressions
implemented call/cc and also add macro support, but the macro is not fully
supported, because we haven't have gensym call and optional argument
we now supported rest argument like (arg1 . rest) and (#!rest rest)
also make same-list support assoc liked list like '(1 (1 2 . 3) . 3)
add setup.scm to add procedure and syntax to evaluator and main.scm
to have repl loop also fix a bug found by test-setup.scm in eval.scm
provide user with eval and apply, also powerful CL macroexpand for
debug macro
fix a bug: couldn't add zero pars lambda
i will never implement C version of si in this repo
merge scheme-version into master, because this repo will contains only scheme version