cropShape with X properties

[alejandrodemiquel]

Proposal for new function. Would solve tasks like 13, 120 and many others I think.

[RodericGuigoCorominas]

Now function exists for shapes of single color and connected. Needs to be enhanced to:

• detect connected shapes of multiple colors
• detect disconnected shapes
• detect reference attributes that aren't intrinsic properties
• detect when output is input shape scaled
• detect when output is input shape with different color

Need to check it doesn't interfere with previously solved tasks.

[RodericGuigoCorominas]

Should add option to crop the shape in the "context" of the original matrix. Alternatively can add a different cropFrame function. This would deal with the cases 28, 204, 395