Just a simple workflow to compare two versions of the same model and understand what kind of changes we have:  - New elements  - Elements modified  - Elements deleted   With this release the script is only able to track where the change happened without any other detail but, I'm planning to make this more useful adding:  - Type of change (geometry, paraemter, etc.)  - Location of element deleted  - Selection of categories to be added to the snapshot (using UI++)  - Reports of changes   Inspiration came from this post:  http://www.martinportfolio.com/blog/2017/1/25/aec-technology-hackathon-2016  but, of course, I would like to create something completely inside Dynamo!   For now just enjoy the idea!  Cesare    
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