[MRG] update to Python>=3.8 #451

	name: Unit test

	on:
	push:
	branches: ['**']
	pull_request:
	branches: ['**']

	env:
	PYTHONPATH: C:\nrn_test\lib\python
	NEURONHOME: C:\nrn_test

	jobs:
	build:

	runs-on: ${{ matrix.os }}
	strategy:
	matrix:
	os: [windows-latest]
	python-version: [3.8, 3.9]

	steps:
	- uses: actions/checkout@v2
	- uses: conda-incubator/setup-miniconda@v2
	with:
	activate-environment: test
	python-version: ${{ matrix.python-version }}
	- name: Install Neuron on Windows separately
	shell: cmd
	run: \|
	powershell -command "gh release download --repo https://github.com/neuronsimulator/nrn --pattern '*.exe' --output nrn-setup.exe"
	start /b /wait .\nrn-setup.exe /S /D=C:\nrn_test
	powershell -command "'C:\nrn_test\bin' >> $env:GITHUB_PATH"
	python -c "import neuron"
	env:
	GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
	- name: Install dependencies and HNN
	shell: cmd
	run: \|
	python -m pip install --upgrade pip
	pip install flake8 pytest pytest-cov
	pip install psutil joblib
	pip install --verbose .[gui,opt]
	- name: Test with pytest
	shell: cmd
	run: \|
	python -m pytest . --cov=hnn_core hnn_core/tests/ --cov-report=xml

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