Add properties with metadata such as IsPrerelease

[binki]

I think it would be useful when handling a bunch of semvers for a product to be able to filter out prerelease, etc. If SemanticVersion exposed properties to indicate whether a release is considered prerelease/beta whatever, that would make it much more useful.

[kolektiv]

Hmmm, yeah that's a useful potential feature. I'll get that in to the next release (along with your suggestion of tagging if I can find a simple way to do it :) )