Django Q and ManyToMany Bug Report Repo

Django bug: https://code.djangoproject.com/ticket/34786

Repro instructions:

1. Clone this repo
2. pip install -r requirements.txt
3. ./manage.py migrate
4. ./manage.py loaddata sample
5. ./manage.py run_test

Sample output from test:

Expect 2 results to match this query:
<QuerySet [<Test: Test object (1)>, <Test: Test object (2)>]>

Expect 3 unique (4 total, one duplicate) results to match this query:
<QuerySet [<Test: Test object (1)>, <Test: Test object (2)>, <Test: Test object (1)>, <Test: Test object (3)>]>

Expect 1 result to match this query:
<QuerySet []>

Expect 1 result to match this query:
<QuerySet [<Test: Test object (1)>]>

Expect 1 result to match this query:
<QuerySet []>