Looks like a nice project, but why wouldn't one use http://pidgin.im, which also supports XMPP and as far as I know is pretty solid, works well, and is also cross-platform?

What advantages does this have over Pidgin?

Pidgin doesn't support OMEMO[0], which is sad. I've also had mixed results using MUC on pidgin/xmpp in the past..

0. https://developer.pidgin.im/ticket/16801