chore: Support `anyio<3` and `anyio>=4` #22

	name: CI

	on:
	push:
	branches: ["main"]
	pull_request:
	branches: ["main"]

	jobs:
	tests:
	name: "Python ${{ matrix.python-version }}"
	runs-on: ubuntu-latest

	timeout-minutes: 30
	strategy:
	matrix:
	python-version: ["3.7", "3.8", "3.9", "3.10", "3.11"]

	steps:
	- uses: actions/checkout@v3
	- uses: actions/setup-python@v3
	with:
	python-version: ${{ matrix.python-version }}

	- name: Run pre-commit
	if: ${{ matrix.python-version == '3.10' }}
	uses: pre-commit/action@v3.0.0

	- uses: actions/cache@v3
	with:
	path: ~/.cache/pip
	key: pip-${{ matrix.python-version }}

	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip setuptools wheel
	python -m pip install -r requirements.txt

	- name: Downgrade trio
	if: ${{ matrix.python-version == '3.7' }}
	run: \|
	python -m pip install "trio==0.21"

	- name: Run tests
	run: python -m coverage run -m pytest

	- name: Downgrade anyio
	run: \|
	python -m pip install "anyio<4" "trio==0.21"

	- name: Re-run tests
	run: python -m coverage run -m pytest

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