Add Multifernet.rotate method (#3979)
* add rotate method
* add some more tests for the failure modes
* start adding some documentation for the rotate method
* operate on a single token at a time, leave lists to the caller
* add versionadded
add versionadded, drop rotate from class doctest
* give rotate a doctest
* single level, not aligned
* add changelog for mf.rotate
* show that, once rotated, the old fernet instance can no longer decrypt the token
* add the instead of just the how
* update docs to reflect removal of ttl from rotate
* update tests
* refactor internal methods so that we can extract the timestamp
* implement rotate
* update wordlist (case sensitive?)
* lints
* consistent naming
* get_token_data/get_unverified_token_data -> better name
* doc changes
* use the static method, do not treat as imethod
* move up to MultiFernet docs
* add to authors
* alter wording
* monkeypatch time to make it less possible for the test to pass simply due to calls occuring in less than one second
* set the time after encryption to make sure that the time is preserved as part of re-encryption
6 files changed
