Upgrade to manifest v3 + update dependencies + bump version 1.3.0 #53

	# workflow name
	name: Unit Tests

	# execute on events
	on:
	pull_request:
	types: [edited, opened, synchronize, reopened]
	# jobs to run
	jobs:

	# install dependencies and run test command
	unit_test:
	name: Unit Tests
	runs-on: ubuntu-latest
	timeout-minutes: 20
	steps:

	# 1: setup node
	- name: Setup Node.js
	uses: actions/setup-node@v1
	with:
	node-version: 12.x

	# 2: Checkout repository in the CWD
	- name: Checkout repository
	uses: actions/checkout@v2

	# 3: install NPM dependencies
	- name: Install dependencies
	run: npm install

	# 4: run test command
	- name: Run test command
	run: npm run test

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