Drop python 3.6 and enable future annotations everywhere #2202

	name: Static code checks

	on:
	push:
	branches: [ master ]
	pull_request:
	branches: [ master ]

	jobs:
	static_checks:
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v2

	- name: Set up Python
	uses: actions/setup-python@v2
	with:
	python-version: '3.8'

	- name: Install tox
	run: \|
	python -m pip install --upgrade pip tox

	- name: Log system information
	run: \|
	test -r /etc/os-release && sh -c '. /etc/os-release && echo "OS: $PRETTY_NAME"'
	python --version
	python -c "print('\nENVIRONMENT VARIABLES\n=====================\n')"
	python -c "import os; [print(f'{k}={v}') for k, v in os.environ.items()]"

	- name: Run mypy
	run: \|
	tox -e mypy

	- name: Run pyflakes
	run: \|
	tox -e pyflakes

	- name: Run pydoctor on its own source and fail on docstring errors
	run: \|
	tox -e apidocs

	- name: Run docs and check extensions
	run: \|
	tox -e testdocs

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