[Documentation] Message.from_jwt and key lenght

[peppelinux]

JWTConnect-Python-OidcMsg/src/oidcmsg/message.py

Line 482 in d32baa6

def from_jwt(self, txt, keyjar, verify=True, **kwargs):

Message.from_jwt's argument keyjar broke the documentation.
It would be nullable instead, to perfectly decouple CryptJWT from OidcMsg for a wider usage (without keyjar)

Otherwise we'll always have this dependency exception

TypeError: from_jwt() missing 1 required positional argument: 'keyjar'

[peppelinux]

Another here

But key should be at least 16 digits

[rohe]

I see no immediate benefit from decoupling oidcmsg from jwtconnect.
So I'll punt this until we have a use case.

[peppelinux]

from what I remember this issue only wants to indicate an asymmetry between the behavior of the library and what is indicated in its documentation

[rohe]

I fixed the key length in the documentation.