Unique Version String Feature

[IChocked]

When debugging and testing fixes, it would be useful to have a function to call to be able to figure out what version of the library is running locally. As it is now, when testing the latest fix, I look at the files that were changed to figure out which version of the library it is, but it would be nice to be able to do something like dicom.Version()

[suyashkumar]

Yep I think that would be nice and I've considered something like that in the past. We'll have to think about how to incorporate such a string at build time.

One option: when running make release, write the current git hash out to a file which is then included in the binary build as a package variable. We could also consider the git tag as well, if present on the commit being built from.