About a month-or-so ago, I promised I would start work on selection tool for the image viewer. I finally got around to it. I ended up doing a pretty significant overhaul, but I think it was worth it.
Cheers,Major overhaul of tools for interacting with the scikit-image viewer.* Add skimage.viewer.canvastools subpackage with line and rectangle selection tools* Refactor line profile plugin to use line tool* Fix viewer canvas* Fix blitting behavior* New plugins (ColorHistogram, Measure, Crop)To get a feel for the changes, see new examples in `viewer_examples/plugins` located in the root directory of package.