add `add()` function to `Container` for use on `Segment` and `Block` #462

	name: NeoCoreTest

	on:
	pull_request:
	branches: [master]
	types: [synchronize, opened, reopened, ready_for_review]
	paths:
	- 'neo/core/**'
	- 'pyproject.toml'

	# run checks on any change of master, including merge of PRs
	push:
	branches: [master]

	concurrency: # Cancel previous workflows on the same pull request
	group: ${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: true

	jobs:
	multi-os-python-numpy:
	runs-on: ${{ matrix.os }}

	strategy:
	fail-fast: true
	matrix:
	os: ["ubuntu-latest", "windows-latest"]
	# "macos-latest",
	python-version: ['3.8', '3.9', '3.10', '3.11']
	numpy-version: ['1.19.5', '1.20.3', '1.21.6', '1.22.4', '1.23.5', '1.24.1']
	exclude:
	- python-version: '3.10'
	numpy-version: '1.19.5'
	- python-version: '3.10'
	numpy-version: '1.20.3'
	- python-version: '3.11'
	numpy-version: '1.19.5'
	- python-version: '3.11'
	numpy-version: '1.20.3'
	- python-version: '3.11'
	numpy-version: '1.21.6'
	steps:
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v4
	with:
	python-version: ${{ matrix.python-version }}

	- name: Checkout repository
	uses: actions/checkout@v3

	- name: Install numpy ${{ matrix.numpy-version }}
	run: \|
	python -m pip install --upgrade pip
	pip install numpy==${{ matrix.numpy-version }}
	pip install pytest pytest-cov
	pip install .

	- name: List pip packages
	run: \|
	pip -V
	pip list

	- name: Run tests
	run: \|
	pytest --cov=neo neo/test/coretest

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