deptrac: test-suite doesn't green on windows

running the testsuite on a windows box lead to a lot of errors.

...<snip>

C:\dvl\GitHub\deptrac\tests\OutputFormatter\BaselineOutputFormatterTest.php:115

31) Tests\Qossmic\Deptrac\OutputFormatter\BaselineOutputFormatterTest::testBasic with data set #1 (array(Qossmic\Deptrac\RulesetEngine\Violation Object (...)), 'skip_violations:\r\n  Origina...lB\r\n')
Failed asserting that two strings are equal.
--- Expected
+++ Actual
@@ @@
-'skip_violations:\r\n
-  OriginalA:\r\n
-    - OriginalB\r\n
+'skip_violations:\n
+  OriginalA:\n
+    - OriginalB\n
 '

C:\dvl\GitHub\deptrac\tests\OutputFormatter\BaselineOutputFormatterTest.php:115

32) Tests\Qossmic\Deptrac\OutputFormatter\BaselineOutputFormatterTest::testBasic with data set #0 (array(Qossmic\Deptrac\RulesetEngine\Violation Object (...)), 'skip_violations:\r\n  ClassA:...sB\r\n')
Failed asserting that two strings are equal.
--- Expected
+++ Actual
@@ @@
-'skip_violations:\r\n
-  ClassA:\r\n
-    - ClassB\r\n
+'skip_violations:\n
+  ClassA:\n
+    - ClassB\n
 '

C:\dvl\GitHub\deptrac\tests\OutputFormatter\BaselineOutputFormatterTest.php:115

FAILURES!
Tests: 283, Assertions: 466, Failures: 32.

it seems most of them are related to mixed line-endings.