fix release constraint #30

	name: Dart

	on:
	push:
	branches: [ master ]
	pull_request:
	branches: [ master ]

	jobs:
	build:
	runs-on: ubuntu-latest

	# Note that this workflow uses the latest stable version of the Dart SDK.
	# Docker images for other release channels - like dev and beta - are also
	# available. See https://hub.docker.com/r/google/dart/ for the available
	# images.
	container:
	image: google/dart:latest

	steps:
	- uses: actions/checkout@v2

	- name: Print Dart SDK version
	run: dart --version

	- name: Install dependencies
	run: dart pub get

	- name: Run Unit Tests
	run: dart pub run test/tests.dart

	# Uncomment this step to verify the use of 'dart format' on each commit.
	# - name: Verify formatting
	# run: dart format --output=none --set-exit-if-changed .

	# Consider passing '--fatal-infos' for slightly stricter analysis.
	#- name: Analyze project source
	# run: dart analyze

	# Your project will need to have tests in test/ and a dependency on
	# package:test for this step to succeed. Note that Flutter projects will
	# want to change this to 'flutter test'.
	#- name: Run tests
	# run: dart test

Provide feedback