Note that not all the validator classes are completely self-contained, some have dependencies on classes from the HV internal package (mainly the logger, in other cases some utility classes).
I think your use case could be addressed with help of the Maven dependency plug-in (or a similar tool, depending on your build environment) and its "unpack" goal; this allows you to extract a set of files (by specifying the right includes) from the HV dependency and pull them locally into your application or re-package them in a custom JAR.
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