Remove validation and strip_tags.
Use simple quotes (sorry :-p).
Allow XYL in post content.

We build a fragment on-the-fly thanks to Hoa\StringBuffer, and use its
streamname as @href in <?xyl-fragment?>. We use @as to abstract the
resource name.
Merge pull request #6 from Hywan/xyl_article

Allow XYL in post content
Hoa\StringBuffer -> Hoa\Stringbuffer.

Be up-to-date with Hoa\Stringbuffer.
Merge pull request #7 from Hywan/fix_stringbuffer

Hoa\StringBuffer -> Hoa\Stringbuffer.
Be compatible with PHP<5.4.