Demo::Foo - Caesar cipher rotating a string's characters by 13 places. (dynamic, version 1.0)
    [Event] plugin_event
    [Function] hello_plugin_world

===
plugin: automatically loaded at startup
calling bif, Hello from the plugin!
===
plugin: automatically loaded at startup
calling bif, Hello from the plugin!
plugin: manually loaded
=-=
=-=
===
plugin: automatically loaded at startup
calling bif, Hello from the plugin!
===
plugin: automatically loaded at startup
calling bif, Hello from the plugin!
plugin: manually loaded
===
plugin: automatically loaded at startup
calling bif, Hello from the plugin!
plugin: manually loaded