Check for downgraded versions #1

	name: Dart CI

	on:
	push:
	branches: [ master ]
	pull_request:

	jobs:
	build:
	runs-on: ubuntu-latest
	container:
	image: dart:stable
	strategy:
	matrix:
	install_dependencies: [ "pub get", "pub downgrade" ]
	steps:
	- uses: actions/checkout@v2
	- name: Update submodules
	run: git config --global --add safe.directory '*' && git submodule update --init --recursive
	- name: Print Dart version
	run: dart --version
	- name: Install dependencies
	run: dart ${{ matrix.install_dependencies }}
	- name: Formatter
	run: dart format --output none --set-exit-if-changed example lib test
	- name: Analyzer
	run: dart analyze --fatal-infos --fatal-warnings
	- name: Tests
	run: dart test --coverage=.coverage
	- name: Coverage
	run: dart run coverage:format_coverage -l -c -i .coverage --report-on=lib --packages=.dart_tool/package_config.json \| dart run check_coverage:check_coverage

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