Required a significant refactoring of the GATKDoclet, which now has a unified place where the ClassDoc, class, annotation, and handler are all stored together.
Index expanded to use summary() annotation field
UserExceptions, ReadFilters, GATK engine all use the system to generate docs
Doclet expanded to handle lots of new cases
Now uses GATKDoc class to organize documentation for arguments.
Arguments now listed by feature (required, optional, hidden, etc) and link to detailed information about the argument in the html
Lots of code moving between Class and ClassDoc objects. Should be refactored into a single static utility class.