Use `load_defaults` rather than `missing` #17


	name: Build Package and Test Source Code [Python 3.6, 3.7, 3.8]

	on:
	push:
	branches:
	- master
	pull_request: {}

	jobs:
	build:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	python-version: [3.6, 3.7, 3.8, 3.9]

	steps:
	- name: Checkout
	uses: actions/checkout@master
	with:
	persist-credentials: false

	- name: Setup Miniconda using Python ${{ matrix.python-version }}
	uses: conda-incubator/setup-miniconda@v2
	with:
	activate-environment: paramtools-dev
	environment-file: environment.yml
	python-version: ${{ matrix.python-version }}
	auto-activate-base: false

	- name: Build
	shell: bash -l {0}
	run: \|
	pip install -e .
	- name: Test
	shell: bash -l {0}
	working-directory: ./
	run: \|
	pytest paramtools -v -s

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