Make tokenizer always put an End token at the end
Make tokenizer always put an End token at the end

This will make it a little easier to implement the parser because we can
just look for an End token to determine the end of a command without
considering the special case of the end of line or file.

skylerberg/ion,redox-os/ion,redox-os/ion,bheesham/ion,jwbowen/ion,bheesham/ion,redox-os/ion,jwbowen/ion