Issue 632: Change `OperatingSystem` parent class to `Software` #905

	# This software was developed at the National Institute of Standards
	# and Technology by employees of the Federal Government in the course
	# of their official duties. Pursuant to title 17 Section 105 of the
	# United States Code this software is not subject to copyright
	# protection and is in the public domain. NIST assumes no
	# responsibility whatsoever for its use by other parties, and makes
	# no guarantees, expressed or implied, about its quality,
	# reliability, or any other characteristic.
	#
	# We would appreciate acknowledgement if the software is used.

	# This workflow uses Make to confirm ontology files have been
	# normalized.

	name: Continuous Integration

	on:
	push:
	branches: [ master, develop, unstable ]
	pull_request:
	branches: [ master, develop, unstable ]

	jobs:
	build:

	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v2
	- uses: actions/setup-java@v3
	with:
	distribution: 'temurin'
	java-version: '11'
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v2
	with:
	python-version: ${{ matrix.python-version }}
	- name: Start from clean state
	run: make clean
	- name: Run tests
	run: make check

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