Add Python package build for multiple Python versions (Linux only) #14

	name: Build & test
	on: push

	jobs:
	build:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2
	- name: Build C++
	run: ./build_library_and_example.sh
	build_python:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2
	with:
	submodules: 'recursive'
	- name: Install build dependencies
	run: \|
	sudo apt-get install python3 python3-pip
	pip install pybind11 wheel
	- name: Build Python
	run: ./build_and_test_python_library.sh
	build_binary_packages:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	python-version: ['3.7', '3.8', '3.9', '3.10', '3.11']
	steps:
	- uses: actions/checkout@v2
	with:
	submodules: 'recursive'
	- name: Set up Python
	uses: actions/setup-python@v2
	with:
	python-version: ${{ matrix.python-version }}
	- name: Display Python version
	run: python -c "import sys; print(sys.version)"
	- name: Install build dependencies
	run: \|
	sudo apt-get install python3 python3-pip
	pip install pybind11 wheel
	- name: Build Python
	run: ./build_and_test_python_library.sh
	- uses: actions/upload-artifact@v2
	with:
	name: wheel-${{ matrix.python-version }}
	retention-days: 5
	path: \|
	dist/IsoOctree*.whl

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