Update blinker to 1.8.0 #41

	# This workflow will install Python dependencies, run tests and lint with a single version of Python
	# For more information see: https://help.github.com/actions/language-and-framework-guides/using-python-with-github-actions

	name: Test package

	on: [pull_request]

	jobs:
	build:

	runs-on: ubuntu-latest
	strategy:
	fail-fast: false
	matrix:
	python-version: [3.6, 3.7, 3.8, 3.9]
	env:
	ROLLBAR_ENABLED: true
	ROLLBAR_SERVER_KEY: testkey

	steps:
	- uses: actions/checkout@v2
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v2
	with:
	python-version: ${{ matrix.python-version }}
	- name: Cache
	uses: actions/cache@v2
	with:
	path: ~/.cache/pip
	key: ${{ runner.os }}-${{ matrix.python-version }}-${{ hashFiles('dev-requirements.txt') }}
	restore-keys: \|
	${{ runner.os }}--${{ matrix.python-version }}-
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install -r dev-requirements.txt
	- name: Lint with flake8
	run: \|
	# stop the build if there are Python syntax errors or undefined names
	flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
	# exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
	flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics

	- name: Test with nose
	run: \|
	nosetests

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