[PATCH] Remove Django 2.0 support

[Daniel Axtens]

Applied, with an adjusted release note. Distros might not ship a newer
version - if not, people who are committed to running distro versions
should run Django 1.11, which is still supported.

Daniel Axtens <dja at axtens.net> writes:

> It's no longer supported upstream, per
> https://www.djangoproject.com/download/#supported-versions
>
> Signed-off-by: Daniel Axtens <dja at axtens.net>
> ---
>  README.rst                                                 | 2 +-
>  .../notes/remove-django-2-0-support-623b936d377a8e56.yaml  | 5 +++++
>  tox.ini                                                    | 7 +++----
>  3 files changed, 9 insertions(+), 5 deletions(-)
>  create mode 100644 releasenotes/notes/remove-django-2-0-support-623b936d377a8e56.yaml
>
> diff --git a/README.rst b/README.rst
> index 495cc2bd7862..f5fc1d1aba76 100644
> --- a/README.rst
> +++ b/README.rst
> @@ -39,7 +39,7 @@ Requirements
>  
>  - Python (2.7, 3.5 - 3.8)
>  
> -- Django (1.11 - 2.2)
> +- Django (1.11, 2.1 - 2.2)
>  
>  - Django REST Framework (3.6 - 3.9)
>  
> diff --git a/releasenotes/notes/remove-django-2-0-support-623b936d377a8e56.yaml b/releasenotes/notes/remove-django-2-0-support-623b936d377a8e56.yaml
> new file mode 100644
> index 000000000000..7513bbead6f8
> --- /dev/null
> +++ b/releasenotes/notes/remove-django-2-0-support-623b936d377a8e56.yaml
> @@ -0,0 +1,5 @@
> +---
> +upgrade:
> +  - |
> +    Django 2.0 is no longer supported. It is no longer supported upstream
> +    and most distributions provide a newer version.
> diff --git a/tox.ini b/tox.ini
> index 140c19246dd1..397a1c52745a 100644
> --- a/tox.ini
> +++ b/tox.ini
> @@ -1,6 +1,6 @@
>  [tox]
>  minversion = 2.0
> -envlist = pep8,docs,py27-django111,py{35,36,37,38}-django{111,20,21,22}
> +envlist = pep8,docs,py27-django111,py{35,36,37,38}-django{111,21,22}
>  skipsdist = True
>  
>  [testenv]
> @@ -11,10 +11,9 @@ deps =
>      django111: djangorestframework>=3.6,<3.10; python_version < '3.0'
>      django111: django-filter>=1.0,<3.0; python_version >= '3.5'
>      django111: django-filter>=1.0,<2.0; python_version < '3.0'
> -    django20: django>=2.0,<2.1
>      django21: django>=2.1,<2.2
> -    django{20,21}: djangorestframework>=3.7,<3.11
> -    django{20,21}: django-filter>=2.0,<3.0
> +    django21: djangorestframework>=3.7,<3.11
> +    django21: django-filter>=2.0,<3.0
>      django22: django>=2.2,<2.3
>      django22: djangorestframework>=3.10,<3.11
>      django22: django-filter>=2.1,<3.0
> -- 
> 2.20.1