Add some test fixture articles that I can parse

And a way to copy them to the test dir.
Test loading the fixtures via Post->articles
Load articles available in $data_dir

This is fairly straight forward and the articles themselves are
lazy so don't read from the disk until you try to load them.

This gives us a way to grab articles that have been written in the most useful order, newest to oldest.
Test that we fail to parse "invalid dates"

Probably we could do something better but this catches the standard
output from the `date` command.
Be fatal if the date we are parsing seems wrong

Because it probably is and we would probably get something we didn't want.
Add XDeadly::Article representing an Article on XDeadly

And article is a special kind of post.
Calculate _epoch when it is needed, not before

No need to calculate it unless we are going to use it.
Test that a Post has a level of 0
Test that the article content is loaded lazily

only when we actually need it
Test that we can load comments for an article

And that it loads sub comments.

Probably should be a way *not* to load subcomments.
Make finding posts more generic

So it can be reused to find comments.
Load comments recursively

When we want them.  I think we generally will want them all so we
can show a count even if we don't actually load the content.
Test a bunch of things and that they don't trigger loading content

because we want to be as lazy as possible
Add XDeadly::Comment

With basic functionality and limited parent finding skills
Test that we don't load articles and comments that don't exist
Make sure articles and comments really are before loading them

Because we don't want crap.
Tests for Article specific things
Add "more" support to the article

Because it's something we need
Add support for department, topic, and topicimg

Because we will need them.  The topicimg tests are a bit lean and
it should likely have an existence check for the image file, but that
might get in the way of putting static files on a different server.
Tests for comments