Funding tag can now be at the item level

[daveajones]

The <podcast:funding> tag is now valid a the <channel> or <item> level.

[nathangathright]

Should we add some language around the expected use? (à la the person tag?)

It is suggested that is always populated, and is populated where needed for an individual episode. Where present, people information in wholly replaces all information from the .

Publishers are expected to use the podcast:person element in the parent to set the regular people involved in the podcast: the detail that would be expected to be seen in an overview of the show.

Publishers are expected to use the podcast:person in the parent to replace all existing information for an individual episode.