Added missing sys import. Started with the still-not-interactive interactive command.
Moved Callback to separate file. Expanded Callback with a test method to allow to trigger on specific callbacks, like ChatMessageCallback.
Started with Emoji definitions.
Removed EMEI and added secret requirement (the WhatsApp generated password).
Added has_child for easy testing in callbacks.
Several new things implemented. Added service loop, keep alive via pings, group message function, targeted callbacks and more.