Move some libraries into a directory.
Add a document directory.
Update readme format.
Update README.
Update document.
Update README.md.
Update document.
Update documents.
Update documents.
Update documents.
Update documents.
Add a test for stream::array_unique.
Add test cases for explode.
Add func::file_get_contents and stream::file_get_contents.
Update a test.
Update document.
Call stream output form as subroutine form.
Update a comment.
Add func::fgets.
Add func::readline.