Improved org-mode support

[bep]

@niklasfasching

Apart from that goorgeous hardcodes which keyword values become arrays rather than plain strings (tags, categories, aliases). go-org does the same for now but we could move that into a keyword like HUGO_ARRIFY_KEYWORD_VALUE (better naming ideas very very welcome :D) so the user can decide themselves here.

The hardcoded approach sounds very limiting. I don’t know Org-mode syntax, but don’t you have a “array syntax”?