test_parallel_get_campaigns error due to no self.mixins()

[tpetr]

test_parallel_get_campaigns has been failing for a long time... BaseClient used to have a mixins() method (i assme for injecting mixins), but now it's part of the constructor:

def __init__(self, api_key=None, timeout=10, mixins=[], access_token=None, refresh_token=None, client_id=None, **extra_options):

we need to update the test to pass PyCurlMixin to the constructor instead of using self.mixins()

[tpetr]

i tap @jpetr to fix this...

[dcancel]

Is this still open?

[tpetr]

#39 fixed this but the pull request didn't auto-close it. closing manually...

[dcancel]

Thank you kindly