Having a build number or version number available in the UI or ViewSource would expedite testing

[cfravel]

It would be good to have a way to know the build number and/or datetime of the Editor you are currently using.
This would be especially helpful for testing / issue reporting. If an issue is reported without that information, it adds work and/or uncertainty for anyone dealing with whether and how to fix it and whether a new build is newer than a fix, e.g. for verification of fix.