* rich_internal function now returns the sum of counts
of the matching rich entries instead of a boolean
It remains backwards compatible thanks to non-null values being
considered as true and when not found it returns 0 (false).
* Update documentation of the `toolid` and `version` in PE module
to reflect changes of behavior: it now returns the sum of counts matching
to given `toolid` and `version`.
* Added test for the updated rich_signature function