Add workflow to check for warnings raised by test suite #1

	name: Test for Warnings

	on:
	workflow_dispatch: null
	schedule:
	# Runs "First of every month at 3:15am Central"
	- cron: '15 8 1 * *'
	push:
	branches:
	- main
	pull_request: null

	jobs:
	tests:
	name: tests
	runs-on: "ubuntu-latest"

	steps:
	- uses: actions/checkout@v2
	with:
	fetch-depth: 0

	- uses: conda-incubator/setup-miniconda@v2
	with:
	python-version: 3.9
	channels: conda-forge,defaults
	channel-priority: strict
	show-channel-urls: true
	miniforge-version: latest
	miniforge-variant: Mambaforge
	use-mamba: true

	- name: configure conda and install code
	# Test against latest releases of each code in the dependency chain
	shell: bash -l {0}
	run: \|
	conda config --set always_yes yes
	mamba install --quiet \
	--file=requirements.txt
	python -m pip install --no-deps -e .
	mamba install -y -q \
	flake8 \
	pytest \
	pytest-xdist \
	pytest-cov \
	pip \
	setuptools \
	"setuptools_scm>=7,<8" \
	python-build \
	flake8-pyproject
	python -m pip install --no-build-isolation --no-deps -e .

	- name: test that no warnings are raised
	shell: bash -l {0}
	run: \|
	export PYTHONWARNINGS=error
	pytest -v diffmah --cov --cov-report=xml

Provide feedback