fix: improve & test timetag / impulse parsing & serialization #4

	# This workflow will install Python dependencies, run tests and lint with a variety of Python versions
	# For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-python

	name: Python package

	on:
	push:
	branches:
	- master
	pull_request:
	branches:
	- master

	jobs:
	run_tests:
	name: QA tests
	runs-on: ubuntu-latest
	strategy:
	fail-fast: false
	matrix:
	python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]

	steps:
	- uses: actions/checkout@v3
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v3
	with:
	python-version: ${{ matrix.python-version }}
	- name: Install QA dependencies
	run: \|
	python -m pip install --upgrade pip
	python -m pip install flake8 pytest
	if [ -f requirements.txt ]; then python -m pip install -r requirements.txt; fi
	- name: Lint with flake8
	run: \|
	# stop the build if there are Python syntax errors or undefined names
	flake8 --count --select=E9,F63,F7,F82 --show-source --statistics uosc tests
	# exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
	flake8 --count --exit-zero --statistics uosc tests
	- name: Test with pytest
	run: \|
	pytest -v tests

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