added contour support to BokehBackend #32

	# This workflow will install Python dependencies, run tests with a variety of
	# Python versions, on the minimal installation version of the package.
	# For more information see: https://help.github.com/actions/language-and-framework-guides/using-python-with-github-actions

	name: Python package minimum installation version

	on:
	push:
	branches: [ master ]
	pull_request:
	branches: [ master ]

	jobs:
	build:

	runs-on: ubuntu-latest
	strategy:
	fail-fast: false
	matrix:
	python-version: ["3.9", "3.10", "3.11", "3.12"]

	steps:
	- uses: actions/checkout@v2
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v2
	with:
	python-version: ${{ matrix.python-version }}

	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	python -m pip install --upgrade setuptools
	python -m pip install pytest pytest-mock
	if [ -f requirements-min.txt ]; then pip install -r requirements-min.txt; fi

	- name: Test with pytest
	run: \|
	pytest

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