Flutter sdk, gradle and customtabslauncher upgrade #16


	name: CI for web implementation package

	on:
	push:
	branches:
	- master
	- develop
	paths:
	- 'flutter_custom_tabs_web/**'
	pull_request:
	paths:
	- 'flutter_custom_tabs_web/**'

	jobs:
	build:
	runs-on: macos-latest
	steps:
	- uses: actions/checkout@v2
	- uses: actions/setup-java@v1
	with:
	java-version: '12.x'
	- uses: subosito/flutter-action@v1
	with:
	channel: 'stable'
	- name: Get flutter dependencies
	run: flutter pub get
	working-directory: ./flutter_custom_tabs_web
	- name: Check for any formatting issues in the code
	run: flutter format --set-exit-if-changed .
	working-directory: ./flutter_custom_tabs_web
	- name: Statically analyze the Dart code for any errors
	run: flutter analyze .
	working-directory: ./flutter_custom_tabs_web
	# TODO: Consider how to do integration tests on GitHub Actions.
	# - uses: nanasess/setup-chromedriver@master
	# - name: Start ChromeDriver
	# run: chromedriver --port=444
	# - name: Run unit tests
	# run: ./run_test.sh
	# working-directory: ./flutter_custom_tabs_web/example

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