Add typehints to much of the core code. #683

	# This workflow installs the package dependencies, lints the package, and
	# executes the package tests.
	# For more details: https://docs.github.com/en/actions/guides/building-and-testing-python
	name: Run tests

	on:
	pull_request:
	branches: [ main ]

	jobs:
	build:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	python-version: ['3.8', '3.9', '3.10', '3.11']
	defaults:
	run:
	shell: bash -l {0}
	steps:
	- uses: actions/checkout@v2
	with:
	# fetch all tags so `versioneer` can properly determine current version
	fetch-depth: 0
	- name: Set up Python ${{ matrix.python-version }}
	uses: conda-incubator/setup-miniconda@v2
	with:
	python-version: ${{ matrix.python-version }}
	miniforge-variant: Mambaforge
	channels: conda-forge
	channel-priority: true
	activate-environment: rubicon-ml-dev
	environment-file: environment.yml
	- name: Check formatting with black
	run: \|
	black --check .
	- name: Check imports with isort
	run: \|
	isort -c .
	- name: Lint with flake8
	run: \|
	flake8 .
	- name: Validate build
	run: \|
	python setup.py sdist bdist_wheel
	pip install dist/rubicon_ml-*.whl
	- name: Test with pytest
	run: \|
	pytest -m 'not run_notebooks and not write_files'

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