add freezegun to ignore list to avoid infinite recursion in TickingDa…

[sanvyruz]

• Adding "freezegun" into list of ignore packages, to avoid infinite recursion inside TickingDateTimeFactory

[coveralls]

Coverage increased (+0.5%) to 92.353% when pulling f764302 on sanvyruz:master into a4620f6 on spulec:master.

[coveralls]

Coverage increased (+0.5%) to 92.353% when pulling f764302 on sanvyruz:master into a4620f6 on spulec:master.

[coveralls]

Coverage increased (+0.5%) to 92.353% when pulling f764302 on sanvyruz:master into a4620f6 on spulec:master.

[coveralls]

Coverage increased (+0.2%) to 92.095% when pulling 8773c90 on sanvyruz:master into a4620f6 on spulec:master.

[boxed]

We should definitely do this, but shouldn't the change just be to add to the default ignore list at https://github.com/spulec/freezegun/blob/master/freezegun/api.py#L718 ?

[sanvyruz]

@boxed I did that initially, but then _should_use_real_time returns a True even within the tests causing them to fail. So added it back to default ignore list conditionally when tick=True (which probably works because there is no test with such condition?)

Perhaps a better way would be to able to add "freezegun.api" to ignore list except in testing environment?