Simply gets all posts of `—post_type` and runs any necessary
syndication.

`$info` can be a `WP_Error` if something went wrong with the
connection…we must handle that condition.

Probably need a better way to surface these errors at the time they
happen, rather than letting them get stored here, but this is at least
a failsafe to prevent fatals.

Add ability to syndicate galleries

Adds Category (and tag) Mapping

whitespace fixed

Replaces nested conditions with if else if

Removing negative conditions.

Changed whitespace to match orig.

Reversed the condition to prevent a negative condition.

Notes on the patch:
Simplepie doesn't pull attributes, so there is no real way to
differentiate currently between categories and tags. My solution was to
check first for existing categories, if not exist, tags, if not exist
create as a category.

Don't delete images when we re-sync

We re-sync post meta, which means deleting the old values and adding the new ones back. We don't re-sync images (presumably for performance purposes) so we can't delete the meta associated with them.

Pass the simple pie item along to the filter to grab additional data

It was colliding with the Facebook plugin. When they were
both active, the syndication menu was hidden.

This ports the custom taxonomy and meta support for XML
over to RSS. We didn't add the UI yet -- that will be
added later.

You can now add fields to any form by hooking in to syn_after_site_form.

Merged in custom field syndication

This fixes the issue by preventing submitting metadata IDs that was not
updated during edit. This bug was introduced when issue #35 was fixed.

All custom field IDs being sent to remote site for deletion. However if
custom thumbnails were not edited and custom_thumb_id matches
_syn_thumb_thumb_id (syndicated reference) it's excluded form
processing and later is lost after deletion on remote. This will fix
the issue.

Add Featured Image Data Syndication

Currently post syndication simply copies post content to the remote
site.
That makes [gallery] short code to contain wrong image IDs.
This patch parses post content, fetches all galleries and upload images
to the remote site prior to the syndication. It adjusts gallery code
with new IDs and then syndication continues normally.

This will allow plugin to syndicate such fields as caption, alternative
text and description. It pulls post data and alt-text meat for the
syndicated image and then updates the remote post once image is
successfully uploaded and the attachment ID is created.
It would be easier to do it on the upload stage but xmlrpc media object
is not supporting caption and description fields at the moment.

When there are no site groups, we should a link to create one.
The taxonomy slug and post type slug were both wrong, presumably
because there were changed at some point and these references
weren't updated.

Because of how XML-RPC works, we can only update existing meta fiels by
specifying IDs we want to override and their new values.

Currently, we don't do this, so updates to pushed posts result in
duplicated meta.

Let's avoid this by first deleting existing meta using IDs, then
re-inserting all the updated meta fields. This way, we can handle adds,
updates, and deletes.

Fixes #35

Otherwise we end up scheudling a cron event for every updated post

Hook into the load process for the plugin.

s/post_id/post_ID/

see #38

Not super easy to hook into so let's just remove it allow alternate ways
to hook in and override things.

This was we can more easily override them for any alternate cron systems
like WP.com jobs

If we error out during an update, retain the ext_ID so that the next
time we try we don't accidentally end up with a duplicate post.

So that we actually syndicate it. Also give it a more descriptive name
(syn_source_url)

See #37

Pushes out posts to the pre-selected sitegroups/sites. More args to be
added later.

see #38

Even though this is more resource-intensive, this helps In case our push process fails halfway through, at least we'll have some
of the site data retained.

The way we were preventing repetitive syndication on every update was
also breaking syndicating the thumbnail to multiple sites. This stores
each thumbnail syndication alongside the site ID so that one site result
cannot stomp on another.

Also updates the meta key to make it more specific.

fixes #36