v2.5.0

Version 2.5.0 of SCS includes:

• Support for iteration over all sessions via the Iterate() method.
• New Token(), Deadline(), GetInt32(), GetInt64() and RememberMe() methods.
• Session stores which require a context.Context are now supported.
• New store implementations for Firestore, MSSQL, GORM and MongoDB.

Thanks to everyone who contributed to this release, especially:

• @gandaldf for updating all the session stores to support iteration, adding the MSSQL and BuntDB stores, and the many improvements to the documentation and stores.
• @jum for implementing the Firestore store, and the discussion around supporting context.Context in session stores.
• @joesonw for the PR to support context.Context in session stores.
• @cgossain for adding the MongoDB store.
• @lafriks for adding the GORM store.