title: OpenCV 3.0 LineIterator
body: <p>I want to use the <a href="http://docs.opencv.org/3.0-beta/modules/imgproc/doc/drawing_functions.html#lineiterator" rel="noreferrer">LineIterator</a> in OpenCV 3.0 using Python, is it still available with OpenCV 3.0 built for Python? It seems that the answers on the internet are all pointing to <code>cv.InitLineIterator</code> which is part of the <code>cv</code> module. I've tried importing this module but it seems like it is not included with the current build. Has it been renamed or strictly just removed?</p>