returns a new property `post-type` next to `type` closes #25
allows the XKCD XML feeds to be parsed with the feed parser
moves XRay classes to `p3k\XRay` namespace
* removes the HTTP classes from this project and uses p3k-http library instead * reorganizes the XRay classes into a psr-4 compatible folder * moves controller autoload into -dev in preparation for turning this into a library (#17)
skip image alt text for now closes #34