Add inline documentation to Node subclasses #573

	name: Unit tests

	on: push

	jobs:
	build:
	runs-on: ubuntu-20.04
	steps:
	- uses: actions/checkout@v2
	- name: Install dependencies
	run: \|
	sudo rm -rf /home/linuxbrew
	sudo apt-get update -y
	sudo apt-get install libasound2-dev libsoundio-dev libsndfile1-dev fftw3-dev -y
	sudo apt-get install python3 python3-setuptools python3-pip python3-numpy
	# annoyingly seems like GitHub Actions as of 30 May 2023 will attempt to install
	# numpy 1.25.0rc1 on Python 3.8, even though it requires Python 3.9+.
	# specify particular version here as a workaround.
	sudo pip3 install pytest numpy==1.22.0 scipy==1.10.0
	- name: Configure
	run: mkdir build && cd build && cmake ..
	- name: Make
	run: cd build && make -j8
	- name: Python build
	run: python3 setup.py build
	- name: Python test
	run: python3 setup.py test

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