version method
Implementation
static String version({bool quiet: false}) {
// TODO: We may want to run `dart --version` in order to know the version
// of the SDK that grinder has located.
// runlib.run(dartVM.path, arguments: ['--version'], quiet: quiet);
// The stdout does not have a stable documented format, so use the provided
// metadata instead.
return Platform.version.substring(0, Platform.version.indexOf(' '));
}