Propose adding `Plane.isometric` to built-in planes #959

	name: Upload coverage reports to Codecov
	on: [push, pull_request]
	jobs:
	run:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v3
	- name: Set up Python 3.10
	uses: actions/setup-python@v4
	with:
	python-version: '3.10'
	- name: Install dependencies
	run: pip install -r requirements.txt
	- name: Run tests and collect coverage
	run: pytest --cov=build123d
	- name: Upload coverage to Codecov
	uses: codecov/codecov-action@v3

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