Flutter CI

Updates flutter and dart version and switches to null safety. #382

Sign in to view logs

Run time

Learn about OS pricing on GitHub Actions

Job	Run time
test (windows-latest)	3m 1s
build (windows-latest)	3m 2s
test (ubuntu-latest)	1m 38s
build (macos-latest)	5m 4s
test (macos-latest)	3m 38s
build (ubuntu-latest)	1m 35s
	17m 58s