session_shelf 0.2.0

The `session_shelf` is the implementation of `cookiesMiddleware` and `sessionMiddleware` for `shelf`, to store sessions in files or SQL databases as plain or encrypted text.

0.2.0

• new abstract class SessionStorage.
• rewrite the original way of storing sessions in a Map into an implementation, MemoryStorage.
• other implementations to store sessions in files or SQL databases as plain or encrypted text: -- FileStorage, FileStorage.plain, FileStorage.crypto, SqlStorage and SqlCryptoStorage.
• corresponding updates: the example has been updated, and some methods were turned into asynchronous ones.
• other minor changes.

0.1.2

• Added some documentation.

0.1.1

• Added static extension method removeCookie(Cookie cookie) to the Request class.

0.1.0

• Initial release.