Add support for `default_node` in `StableContainer` / `Profile` #160

	name: Remerkleable Python CI

	on: [push, pull_request]

	jobs:
	build:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2
	- name: Set up Python 3.8
	uses: actions/setup-python@v1
	with:
	python-version: 3.8
	- name: Cache pip
	uses: actions/cache@v1
	with:
	path: ~/.cache/pip # This path is specific to Ubuntu
	# Look to see if there is a cache hit for the corresponding requirements file
	key: ${{ runner.os }}-pip-${{ hashFiles('setup.py') }}
	restore-keys: \|
	${{ runner.os }}-pip-
	${{ runner.os }}-
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install .
	- name: Lint with flake8 and mypy
	run: \|
	pip install .[linting]
	# stop the build if there are Python syntax errors or undefined names
	flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
	# exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
	flake8 . --count --exit-zero --max-complexity=15 --max-line-length=127 --statistics
	- name: Test with pytest
	run: \|
	pip install .[testing]
	pytest

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