[rfc-i] draft-iab-xml2rfc-03, "2.45.9 "prepTime" Attribute"

[julian.reschke at gmx.de (Julian Reschke)]

<https://greenbytes.de/tech/webdav/draft-iab-xml2rfc-03.html#rfc.section.2.45.9>:

"The date that the XML was processed by a prep tool. This is included in 
the XML file just before it is saved to disk. The value is formatted 
using the format from [RFC3339]."

Might be good to be more precise here, such as with

  "using the 'date-time' format defined in Section 5.6 of [RFC3339]."

(Also, do we want to restrict time zone information to just "Z"?)

Best regards, Julian