add error handling and add optional interval specification #4

	name: ci

	on:
	pull_request:
	push:
	branches: [main]

	jobs:
	tests:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	pg-version: [10, 11, 12, 13, 14, 15]
	steps:
	- uses: actions/checkout@v3
	- name: Set up Python
	uses: actions/setup-python@v4
	with:
	python-version: '3.11'
	- name: install dependencies
	run: pip install -r requirements-dev.txt
	- name: run tests
	run: \|
	coverage run -m pytest
	coverage report
	env:
	PG_VERSION: ${{ matrix.pg-version }}

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