[request] want java rectangle features for Region (union, intersection, intersects, contains)

based on
https://github.com/sikuli/sikuli/issues/6

and the Java docs
http://docs.oracle.com/javase/6/docs/api/java/awt/Rectangle.html

these features for the class Region would be helpful:

--- return a new region or None
Region.union(Region)
Region.union(Location)
Region.intersection(Region)

--- return True or False
Region.contains(Region)
Region.intersects(Region)
Region.contains(Location)

Currently these features can be used by casting the Region object to a Java rectangle and back to a Region:

regUnion = Region(r0.getRect().union(r1.getRect()))