Fix line endings support at various locations

test/test_pep8.py

@@ -15,6 +15,8 @@ def test_eof_newline():
         assert issue.code == 292
 
     assert not issues('asdf = 1\n')
+    assert not issues('asdf = 1\r\n')
+    assert not issues('asdf = 1\r')
     assert_issue('asdf = 1')
     assert_issue('asdf = 1\n# foo')
     assert_issue('# foobar')