get_marker no longer available in pytest 4.0.0

[greenpasta]

I'm getting the following deprecation warnings using pytest-dependency 0.3.2 with pytest 3.8.0:

/usr/local/venv/pytest/lib64/python3.6/site-packages/pytest_dependency.py:150: RemovedInPytest4Warning: MarkInfo objects are deprecated as they contain merged marks which are hard to deal with correctly.
Please use node.get_closest_marker(name) or node.iter_markers(name).
Docs: https://docs.pytest.org/en/latest/mark.html#updating-code
  depends = marker.kwargs.get('depends')
/usr/local/venv/pytest/lib64/python3.6/site-packages/pytest_dependency.py:139: RemovedInPytest4Warning: MarkInfo objects are deprecated as they contain merged marks which are hard to deal with correctly.
Please use node.get_closest_marker(name) or node.iter_markers(name).
Docs: https://docs.pytest.org/en/latest/mark.html#updating-code
  name = marker.kwargs.get('name') if marker is not None else None

[RKrahl]

Thanks for raising this! I will have to look into it. It may take some time.

[deepbrook]

PR #25 should fix this!