[feat] scoped datasets

tests/Features/ScopedDatasets/TestFileOutOfScope.php

@@ -0,0 +1,12 @@
+<?php
+
+$state = new stdClass();
+$state->text = '';
+test('uses dataset', function ($value) use ($state) {
+    $state->text .= $value;
+    expect(true)->toBe(true);
+})->with('numbers.array');
+
+test('the right dataset is taken', function () use ($state) {
+    expect($state->text)->toBe('12');
+});