* Updated library to work with the new way the Flutter stable branch manages logging for Flutter driver
* Fixed spelling mistake of `targetAppWorkingDirectory`&`flutterDriverMaxConnectionAttempts` in `FlutterTestConfiguration`
* Added the ability to test against an already running app; enabling you to debug a running application while it has tests executed against it. Setting the configuration property `runningAppProtocolEndpointUri` to the service protocol endpoint (found in stdout when an app has `--verbose` logging turned on) will ensure that the existing app is connected to rather than starting a new instance of the app. NOTE: ensure the app you are trying to connect to calls `enableFlutterDriverExtension()` when it starts up otherwise the Flutter Driver will not be able to connect to it.
* Updated to latest Gherkin library (see https://github.com/jonsamwell/dart_gherkin/blob/master/CHANGELOG.md#117---04032020) - this includes a breaking change to the `Hook` inteface that will need to be updated if any of the `Scenerio` level methods are implemented
* Ensured the well known step `I tap the ".." button` scroll the element into view first
* Added a new well known step `Then I expect the widget 'notification' to be present within 2 seconds` which expects a widget with a given key to be present within n seconds
* When more than one connected device is present the device to run against was unknown causing a failure, now a message is logged saying the --device-id argument needs to be set
* Fixed issue where depricated api warnings when build a flutter app were written to the stderr stream
* Added configuration parameter `flutterBuildTimeout` to allow setting the app build wait timeout. Slower machines may need longer to build and start the Flutter app under test.
* Added Flutter driver reporter - the Flutter Driver logs all messages (even non-error ones) to stderr and will cause the process to be marked as failed by a CI server becuase of this. So this reporter redirects the messages to the appropiate output stream (stdout / stderr).
* Updated to latest Gherkin lib which implements langauges - features can now be written in different languages / dialects! See https://cucumber.io/docs/gherkin/reference/#overview for supported dialects.
* Added ability to include a hook (see `AttachScreenshotOnFailedStepHook`) that takes a screenshot after a failed step. If using the json reporter it include the screenshot in the report that can then be used to generate a HTML report.