[IMP-dev] First code review

[Daniel Russel <drussel@gmail.com>]

In interest of trying the new system, I'll dump my local changes back  
to svn.
First, I made some minor cleanups to the decorator classes and added  
the ability to get the key for each coordinate (x,y,z) from the  
XYZDecorator.

Attachment: decorators
Description: Binary data