message: Add aria label to event stream button
diff: @@ -16,7 +16,14 @@ export class TogglePlay extends React.Component {
  this.props.className,
  this.props.active ? 'co-toggle-play--active' : 'co-toggle-play--inactive',
  );
  - return <Button variant="plain" className={klass} onClick={this.props.onClick} />;
  + return (
  + <Button
  + variant="plain"
  + className={klass}
  + onClick={this.props.onClick}
  + aria-label={this.props.active ? 'Pause event streaming' : 'Start streaming events'}
  + />
  + );
  }
  }
  TogglePlay.propTypes = {
  