added StepStartedMessage with table data, for reporters to use.

lib/src/feature_file_runner.dart

@@ -136,7 +136,7 @@ class FeatureFileRunner {
     await _log(
         "Attempting to run step '${step.name}'", step.debug, MessageLevel.info);
     await _reporter
-        .onStepStarted(StartedMessage(Target.step, step.name, step.debug));
+        .onStepStarted(StepStartedMessage(Target.step, step.name, step.debug, step.table));
     if (skipExecution) {
       result = StepResult(0, StepExecutionResult.skipped);
     } else {

lib/src/reporters/aggregated_reporter.dart

@@ -43,7 +43,7 @@ class AggregatedReporter extends Reporter {
   }
 
   @override
-  Future<void> onStepStarted(StartedMessage message) async {
+  Future<void> onStepStarted(StepStartedMessage message) async {
     await _invokeReporters((r) async => await r.onStepStarted(message));
   }
 

lib/src/reporters/messages.dart

@@ -1,3 +1,4 @@
+import 'package:flutter_gherkin/src/gherkin/models/table.dart';
 import 'package:flutter_gherkin/src/gherkin/runnables/debug_information.dart';
 import 'package:flutter_gherkin/src/gherkin/steps/step_run_result.dart';
 
@@ -19,6 +20,14 @@ class FinishedMessage {
   FinishedMessage(this.target, this.name, this.context);
 }
 
+class StepStartedMessage extends StartedMessage {
+  final Table table;
+
+  StepStartedMessage(
+      Target target, String name, RunnableDebugInformation context, this.table)
+      : super(target, name, context);
+}
+
 class StepFinishedMessage extends FinishedMessage {
   final StepResult result;
 

lib/src/reporters/reporter.dart

@@ -8,7 +8,7 @@ abstract class Reporter {
   Future<void> onFeatureFinished(FinishedMessage message) async {}
   Future<void> onScenarioStarted(StartedMessage message) async {}
   Future<void> onScenarioFinished(ScenarioFinishedMessage message) async {}
-  Future<void> onStepStarted(StartedMessage message) async {}
+  Future<void> onStepStarted(StepStartedMessage message) async {}
   Future<void> onStepFinished(StepFinishedMessage message) async {}
   Future<void> onException(Exception exception, StackTrace stackTrace) async {}
   Future<void> message(String message, MessageLevel level) async {}