Drop Python 3.6 support

We cannot run tests with Python 3.10 using Pytest 6.x due to [1]. This
is fixed in Pytest 7.x but Pytest 7.x no longer supports Python 3.6
which aioresponses tries to support. However because Python 3.6 is
already past the EOL date, the simplest solution is to no longer test
with Python 3.6 and to stop declaring support for that version.

[1] pytest-dev/pytest#8546

.github/workflows/ci.yml

@@ -19,25 +19,6 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - python-version: 3.6
-            aiohttp-version: aiohttp30
-          - python-version: 3.6
-            aiohttp-version: aiohttp31
-          - python-version: 3.6
-            aiohttp-version: aiohttp32
-          - python-version: 3.6
-            aiohttp-version: aiohttp33
-          - python-version: 3.6
-            aiohttp-version: aiohttp34
-          - python-version: 3.6
-            aiohttp-version: aiohttp35
-          - python-version: 3.6
-            aiohttp-version: aiohttp36
-          - python-version: 3.6
-            aiohttp-version: aiohttp37
-          - python-version: 3.6
-            aiohttp-version: aiohttp38
-
           - python-version: 3.7
             aiohttp-version: aiohttp33
           - python-version: 3.7

CONTRIBUTING.rst

@@ -101,7 +101,7 @@ Before you submit a pull request, check that it meets these guidelines:
 2. If the pull request adds functionality, the docs should be updated. Put
    your new functionality into a function with a docstring, and add the
    feature to the list in README.rst.
-3. The pull request should work for Python 3.5, 3.6, 3.7 and for PyPy. Check
+3. The pull request should work for Python 3.7+ and for PyPy. Check
    https://travis-ci.org/pnuckowski/aioresponses/pull_requests
    and make sure that the tests pass for all supported Python versions.
 

setup.cfg

@@ -15,7 +15,6 @@ classifier =
   License :: OSI Approved :: MIT License
   Natural Language :: English
   Programming Language :: Python :: 3
-  Programming Language :: Python :: 3.6
   Programming Language :: Python :: 3.7
   Programming Language :: Python :: 3.8
   Programming Language :: Python :: 3.9

tox.ini

@@ -2,7 +2,6 @@
 envlist =
     flake8,
     coverage,
-    py3.6-aiohttp{30,31,32,33,34,35,36,37,38}
     py3.7-aiohttp{33,34,35,36,37,38}
     py3.8-aiohttp{33,34,35,36,37,38}
     py3.9-aiohttp{37,38}