Correct add namespaces - use psr4 and not move all files
Get library - from tecnocat - BirknerAlex add namespaces, but remove examples.
Also merge allmost all usefull patches and merge ours all stupid patches with
only rename composer, move files or fix formatting, (*1)
composer require zorn-v/xmpphp
XMPPHP is an elegant PHP library for XMPP (aka Jabber, Google Talk, etc)., (*2)