Resolves #180, install katex #13

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

	name: Lint and Test

	# Controls when the action will run.
	on:
	# Triggers the workflow on push or pull request events but only for the main branch
	pull_request:
	branches: [ master ]

	# Allows you to run this workflow manually from the Actions tab
	workflow_dispatch:

	# 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

	- name: Setup Node.js
	uses: actions/setup-node@v1
	with:
	node-version: 14.x
	- name: Install dependencies
	run: yarn
	working-directory: ./

	- name: Lint
	run: yarn lint
	working-directory: ./

	- name: Test
	run: yarn test
	working-directory: ./


	# end

Provide feedback