torch matm backend fixes and tests #1080

	# This is a basic workflow to help you get started with Actions

	name: Test

	# Controls when the action will run. Triggers the workflow on push or pull request
	# events but only for the master branch
	on:
	push:
	branches: [ '*' ]
	paths-ignore: [ 'docs/**' ]
	pull_request:
	paths-ignore: [ 'docs/**' ]

	# A workflow run is made up of one or more jobs that can run sequentially or in parallel
	jobs:
	# This workflow contains a single job called "build"
	build:
	# The type of runner that the job will run on
	runs-on: ubuntu-latest

	# Steps represent a sequence of tasks that will be executed as part of the job
	steps:
	# Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
	- uses: actions/checkout@v2
	with:
	submodules: recursive

	- name: Setup Python
	uses: actions/setup-python@v2
	with:
	python-version: 3.8


	- name: Setup dependencies
	run: \|
	pip install numpy torch pynauty kahypar
	pip install pytest mock
	pip install .
	cd qtree && pip install .

	- name: Test
	run: cd qtensor && pytest

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