Auto refresh per token

[MoisesRT]

After I created the issue: #190
I started to work on a solution for it because we need it in our Django project,
so I did it in a way that the current behavior won't be affected.

[belugame]

@MoisesRT could you resolve the migration file name conflict and i will merge and release :) thank you

[mohammadreza76]

hi
for using refresh token,now i set auto_refresh true and MIN_REFRESH_INTERVAL equal 10 and i set token_ttl in settings.my question is after these works what should i do?and what front should do?