laminas-feed reads and writes RSS and Atom feeds. Laminas\Feed\Reader
consumes feeds of any common version through one interface.
Laminas\Feed\Writer builds RSS 2.0 and Atom 1.0 feeds from a single feed
object, with correct escaping and dates.

Classes are installed under the PHP include path in
share/pear/Laminas/Feed, laid out by namespace, so any PSR-4 autoloader
can find them.
