Rename Images directory to icons and make all filenames lowercase.

Add ignore file.

This is achieved by finding the intersection point of the line formed by
the previous point and current mouse position, and each edge in
succession. The edge closest to the mouse position is chosen, and the
projection of the position on it is selected.

This was not checked against in the mouse press handler.

Merge manual labeling/selection code into scale/control branch.

Manually handle conflicts in canvas.py.

Ctrl+wheel controls vertical zooming, while plain wheel events scroll the
canvas and Shift-wheel performs horizontal scroll.

In addition, the Escape key cancels the currently drawn shape.

Draw the image in the same painter as the shapes.

Center the image inside the widget and transform the painter so that any
drawing is done relative to the pixmap, and any scaling is applied to both.

Added the code to do that in canvas
Added select shape , when the user click on any shape it's choosen and the outline becomes white
(done that in canavas and shape)

Make point shape and size class variables, so that changing them will
affect all shapes.

Re-add the last point when double clicking, so that it is consistent
with the point list created normally, and because it is also used to
when checking if a path is closed.

small change in canvas

This approach seems much cleaner and more intuitive than the previous
one.

Take the opportunity to refactor the code.

Refactor shape code and fix errors. The shapes are not scaled along with
the image currently.

Update resizing code to follow scroll area's size.

Refactor image resizing code in the process.

The color is saved across application runs, but is not used yet.

Doesn't do much yet

Add polygons, etc

Add Qt4 test application