[O] Feature Request. org-bibtex-tags-are-keywords inherit tags

[Leonard Randall]

Hi,
Right now when you run org-bibtex with org-bibtex-tags-are-keywords set to
true, only the tags assigned directly to the headline are converted. So for
instance if run org bibtex on a file set up like this.
* Authority  :auth:
** Kant's Views on authority :Kant:
:properties:
(bibliography info here)
:end:
This behavior is controlled by the function org-bibtex-headline in
org-bibtex.el. I can change the behavior on my machine by changing
`org-get-local-tags-at' to `org-get-tags-at' in