added celery3/django1.11/python3.7 to excludes
added celery3/django1.11/python3.7 to excludes

Django 1.11 does currently not run on Python 3.7

beniwohli/apm-agent-python,beniwohli/apm-agent-python,beniwohli/apm-agent-python,beniwohli/apm-agent-python