deprecation warning

[jdavid]

https://github.com/Rhumbix/django-request-logging/blob/master/request_logging/middleware.py#L5

The import should be reversed to avoid a deprecation warning with Django 1.11, it should read:

try:
    # Django 2.x
    from django.urls import Resolver404
except ImportError:
    # Django 1.x
    from django.core.urlresolvers import Resolver404

Probably both try/except blocks could be merged.

[tclancy]

Awesome, do you mind combining the two import checks?