Breaking: Switch to Result[T, Error] returns instead of raising funct…

…ions until Tuple Memory type support. (#25)

* wip

* refactored bytes buffer and reader to use Result error returns instead of raising Errors

* wip eh

* update test

* cleanup w result

* add goodies dir

* csv wip

* wip

* fix memory issues with WrappedError and Optional in bufio

* test flushing on csv writer

* add buffered read test

* rm test file

* readme touch up

* linting

* fix readme

* rm ds store

* rm ds store

* update io

Update README.md