v2.0.0

Major refactor and adds serializer

In addition:
* Fix ascii flag output
* Add dump, dumps, load, and loads methods
* Update README
* Rename main directory
* Deprecate read_binary_cookies_file function in favor of binarycookies.load()
* New pypi project binarycookies, the previous binary-cookies-parser has been deprecated

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pypi package: https://pypi.org/project/binary-cookies-parser/2.0.0/