Shall I add Rect comparison operators?

```
In my own client code I found comparison operators for Rect to be useful.  If I 
add them (and you find them acceptable) will you accept them?

The operators make Rect hashable and sortable.  Aside from that, rect1 < rect2 
is not a very interesting geometric comparison.


```

Original issue reported on code.google.com by `jmcgehe...@gmail.com` on 23 Aug 2013 at 12:12
