CFRunLoop required (?)

[smilingthax]

Syphon uses NSDistributedNotificationCenter (e.g.) to detect already running servers, which requires a spinning CFRunLoop (e.g via NSRunLoop).
Esp. when using a non-GUI Server one might be tempted to skip this.

For Syphon Servers AFAICT only Clients requesting initial discovery of already running servers does not work, when the Server does not use CFRunLoop ...
Maybe this requirement could be relaxed in Syphon?

Whereas for Syphon Clients / Discovery, receiving Notifications is at the moment a fundamental requirement.

At least, this should be documented.

[smilingthax]

For example, when using the GLib/GTK+ cross-platform framework: Glib::MainLoop does not spin CFRunLoop, vs Gtk::Main / Gtk::Application, which does... (cf. #56 (comment))