Adding icon setting
Updating and negative box adjusting
Implement key-based navigation
Merge pull request #31 from aliceh75/29-key-navigation

Implement key-based navigation
Refactor mouse event handling to use handlers rather than naming convention. Fix various mouse event issues.
Add zoom handling by using the wheel with the control key
Merge pull request #33 from aliceh75/clearer_mouse_handling

Refactor mouse event handling to use handlers rather than naming convention
Merge pull request #35 from holtzhau/boxresize

Boxresize
LAB edge work
LAB h and v edges
New LAB edge and remove straight lines
More experiments
Experiments
Working on watershed experiment
Contours added to the rects
Watershed resegmenter
Grabcut work
Cleaning up 1
Clean up
Documentation.