vectors, blobs, strings with equal contets are equal
check length before compare contents
implement circular refarence checking
Merge branch 'master' into equal
rewrite `include` macro with scheme
support `(define-values (x y . z) ...)`
unlock define-values tests
remove useless fflush
change pic_throw API
throw READ_ERROR when parser raised
support #true and #false literals
Merge branch 'boolean-alternative-notation'
fix bug of `{bytevector, vector}-copy!` with the same src and dst
Merge pull request #162 from KeenS/hotfix

fix bug of `{bytevector, vector}-copy!` with the same src and dst
read rational '123/456' literal
'make tak' broken
add pic_dict_new
add attribute information to closure objects
add attribute function
Merge branch 'closure-attribute'. close #124