add model with muscles and contact forces #186

	# This workflow will install Python dependencies, run tests and lint on several OS with a several versions of Python
	# See: https://help.github.com/actions/language-and-framework-guides/using-python-with-github-actions

	name: Build on Win-MacOS-Ubuntu with Python 3.7-3.11

	on:
	push:
	branches: [ "main" ]
	paths-ignore:
	- 'README.md'
	- 'Content/**'
	pull_request:
	branches: [ "main" ]

	permissions:
	contents: read

	jobs:
	build:
	runs-on: ${{ matrix.os }}

	strategy:
	fail-fast: false
	matrix:
	os: [ubuntu-latest, macos-latest, windows-latest]
	python-version: [3.7, 3.8, 3.9, "3.10", "3.11"]
	include:
	- os: ubuntu-latest
	path: ~/.cache/pip
	- os: macos-latest
	path: ~/Library/Caches/pip
	- os: windows-latest
	path: ~\AppData\Local\pip\Cache

	steps:
	- name: Checkout code
	uses: actions/checkout@v3

	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v3
	with:
	python-version: ${{ matrix.python-version }}

	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	python -m pip install flake8 pytest
	python -m pip install git+https://github.com/${{ github.repository }}.git@${{ github.sha }}
	- name: Lint with flake8
	run: \|
	# stop the build if there are Python syntax errors or undefined names
	flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
	# exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
	flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
	- name: Test with pytest
	run: \|
	cd Pose2Sim/Demo
	pytest -v test.py

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