u-repost-of draft->core bc way more than 3+ pub and consuming impls/sites

[tantek]

There are far more than 3+ publishing sites (and implementations) as well as consuming sites (and implementations) , e.g. Known, Redwind, p3k, and many more documented, of u-repost-of draft property:

• ~5+ publishing sites + implementations: https://indieweb.org/repost#IndieWeb_Examples
• ~3+ consuming sites + implementations: https://indieweb.org/reposts#IndieWeb_Examples (e.g. in addition Known, Redwind, and WordPress plugins and sites to do so like on david.shanske.com)

Assuming no objections (that would override the preponderance of momentum from deployment), it's long past time to make u-repost-of a core property.

cc: @benwerd @kylewm @aaronpk @snarfed @kevinmarks @dshanske @voxpelli @sebsel

[tantek]

Based on unanimous consensus, h-entry updated accordingly per draft http://microformats.org/wiki/index.php?title=h-entry&oldid=65900

[tantek]

(need to open similar issues for u-photo and u-video and cite / verify research on those accordingly)
Update: #4 and #5