Can I do an or in a version block?

[Andrej Mitrovic]

I have a felling people will end up abusing string mixins to generate
version statements, and this will be the exact opposite effect Walter
wanted. The same story goes for unittests which can't be independently
ran to get a list of all failing unittests, and so people are coming
up with their own custom unittest framework (e.g. the Orange library).