refactored to have multiple independent test formats

Author: DavertMik

src/Codeception/Module/Sequence.php

@@ -3,7 +3,7 @@
 
 use Codeception\Module as CodeceptionModule;
 use Codeception\Exception\ModuleException;
-use Codeception\TestCase;
+use Codeception\TestInterface;
 
 /**
  * Sequence solves data cleanup issue in alternative way.
@@ -55,7 +55,7 @@ class Sequence extends CodeceptionModule
 {
     public static $hash = array();
 
-    public function _after(TestCase $t)
+    public function _after(TestInterface $t)
     {
         self::$hash = [];
     }

tests/unit/Codeception/Module/SequenceTest.php

@@ -1,6 +1,6 @@
 <?php
 
-class SequenceTest extends Codeception\TestCase\Test
+class SequenceTest extends \Codeception\Test\TestCase
 {
     // tests
     public function testSequences()