- Fixes https://github.com/kaushalmodi/ox-hugo/issues/206.
- Move org-hugo--get-reference from ox-hugo.el to
org-blackfriday--get-reference in ox-blackfriday.el.
- Minor code cleanup; remove commented out calls to
org-export-get-reference.
caption tags should not be used outside table tags -
https://www.w3schools.com/tags/tag_caption.asp
Because of the hugo/blackfriday limitation, we'll live with the table
caption staying in a plain div just before the table.
Kaushal Modi