[CodeFactor](https://www.codefactor.io/repository/github/palikar/ctgraph) found multiple issues last seen at 041bb682d1d3245d493feaa33690b4c6e664a0f3: #### Redundant blank line at the end of a code block should be deleted. [tests\iterators_test.cpp:58 ](https://www.codefactor.io/repository/github/palikar/ctgraph/source/master/tests/iterators_test.cpp#L58) #### Redundant blank line at the start of a code block should be deleted. [tests\iterators_test.cpp:38 ](https://www.codefactor.io/repository/github/palikar/ctgraph/source/master/tests/iterators_test.cpp#L38)[tests\iterators_test.cpp:23 ](https://www.codefactor.io/repository/github/palikar/ctgraph/source/master/tests/iterators_test.cpp#L23)
