verify_expiration no longer supported by pyJWT

[cancan101]

This line likely needs to be changed: https://github.com/GetBlimp/django-rest-framework-jwt/blob/96eb5d9838967a88dfc7d92acfd21ba7481bf50b/rest_framework_jwt/utils.py#L54

perhaps options={'verify_exp': XXX} should be used.

see: jpadilla/pyjwt#147

[lucacorti]

I'm running into issues with JWT_VERIFY_EXPIRATION set to False, basically it seems to have no effect at all. I guess it depends on this.

[jpadilla]

Checking this out right now

[lucacorti]

Downgrading to PyJWT 1.0.1 seems to work until a new version of django-rest-framework-jwt and/or PyJWT is issued.