fix: solve attach id not inherited from parents.

[MephistoMMM]

Enabling inheritance for implies that attachment links will look through all parent headings until it finds the linked attachment.

[rasendubi]

Looks good for me as a quick fix. (Ideally, this option should be set to the corresponding emacs option.) One clarification though: uniorg doesn't check the presence of the attachment—the inheritance is only used to resolve id/dir

[MephistoMMM]

(Ideally, this option should be set to the corresponding emacs option.)

You are right, I modified it 👌

[tefkah]

Fantastic! I'll add some documentation but otherwise it lgtm