10 things you (probably) didn't know about App Engine

What could be better than nine nifty tips and tricks about App Engine? Why, ten of course. As we've been participating in the discussion groups, we've noticed that some features of App Engine often go unnoticed so we've come up with just under eleven fun facts which might just change the way that you develop your app. Without further ado, bring on the first tip: 1. App Versions are strings, not