Update Shoes::Shape to use Dimensions
Add better #to_s for Dimensions
Pass block to shape properly
Update shape setup for configuration spec
Delete debugging leftovers
Refactor native measurement access for readability
Make samples/sample31.rb compatible with Shoes 3

Shoes 3 doesn't have #quad_to
Initialize dimensions with real values
Refactor before_drawing
Update gui position during initialization

This seems like it should take care of the positioning issues,
but for some reason, element_left and element_top are still 0.
Make x,y handling consistent
Typo
Remove #quad_to from Shape

This method isn't in Shoes 3, and wasn't fully baked. Let's hold
off on adding this.
Fix configuration spec using shape
Don't delegate #to_s from Dimensions
move attr_* in shape above initialize where we usually have it
Add the absolute dimensions to the to_s and fix a lil bug in the meantime
Get rid off more methods that are already handled in the dimensions
Be more encouraging about trying v4
Remove unused code