1.3 - Velocity support

Yes, I know Velocity already uses an annotation and annotation processor to generate it's plugin meta file, I added support to conveniently have the version in there without resorting to hacks, manually changing it or setting up templating for a single string. Also wooo new feature.

Sooo, just add @VelocityPlugin and specify depencendies with @Dependency (warning, different import!) as usual.