Inherited arguments of __init__ functions are not IDE friendly.

[eoyilmaz]

Explicitly add all the inherited arguments of __init__ to all the inherited classes, so that it is clear which class has which arguments and IDE's will better help with their hints.

As seen in the following picture, PyCharm can't understand that the code argument is coming from a parent class. Because the Repository class has the *args and **kwargs arguments which are implicity passing args to the parent class.