minor #362

	name: Test

	on: [push, pull_request]

	jobs:

	test:

	runs-on: ${{ matrix.os }}

	strategy:
	matrix:
	os: [ubuntu-latest, windows-latest, macos-latest]
	python-version: ['3.9', '3.10', '3.11']

	steps:

	- uses: actions/checkout@v3

	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v4
	with:
	python-version: ${{ matrix.python-version }}

	# rationale: we test against an environment which had
	# current packages as of ~ Q4 2022 for python 3.10
	# and ~ Q4 2021 for python 3.9
	# we only install the base packages here (pip below figures out the others)

	- name: If running on python 3.9 install some old dependencies
	if: ${{ matrix.python-version == '3.9'}}
	run: python -m pip install numpy==1.21.5 scipy==1.7.3 cvxpy==1.1.17 pandas==1.4.0 osqp==0.6.2.post0 ecos==2.0.11 scs==2.1.4

	- name: If running on python 3.10 install some old dependencies
	if: ${{ matrix.python-version == '3.10'}}
	run: python -m pip install numpy==1.23.4 scipy==1.9.3 cvxpy==1.2.3 pandas==1.5.0 osqp==0.6.2.post9 ecos==2.0.12 scs==3.2.2

	- name: Install package
	run: \|
	python -m pip install .
	python -m pip install coverage

	- name: Run tests with coverage
	run: \|
	coverage run -m unittest discover cvxportfolio
	coverage lcov

	- name: Coveralls GitHub Action
	uses: coverallsapp/github-action@v1
	with:
	path-to-lcov: coverage.lcov

Provide feedback