  deps =
          django22: Django>=2.2,<3.0
          django30: Django>=3.0,<3.1
          django31: Django>=3.1,<3.2
          djangomaster: https://github.com/django/django/archive/master.tar.gz
          -rrequirements/requirements-testing.txt
          -rrequirements/requirements-optionals.txt
  
 
</s> remove        {py36,py37,py38,py39}-djangomaster,
 </s> add        {py36,py37,py38,py39}-django32,
       {py38,py39}-djangomaster,
        django32: Django>=3.2a1,<4.0
  deps =
          django22: Django>=2.2,<3.0
          django30: Django>=3.0,<3.1
          django31: Django>=3.1,<3.2
        django32: Django>=3.2a1,<4.0
          djangomaster: https://github.com/django/django/archive/master.tar.gz
          -rrequirements/requirements-testing.txt
          -rrequirements/requirements-optionals.txt
  
keep keep keep add keep keep keep keep
 Dj32 (#7713)

adds django 3.2 line to the build matrix 
tox.ini