Better argument parser

[JakeGinnivan]

Depending on the ordering of some of the switches things do not work. We should switch to a small simple library

[JakeGinnivan]

Looking into this, most decent libraries work similar to git (which actually could be good to align to).

The main difference is the single dash means a short code and must be a single letter. In git this is why you can go git commit -am "Msg" and that expands to git commit --add --message "Msg"

So the question is, should we break the existing command line usage and rethink it to make it better or do we need to stay compatible.

@andreasohlund @gep13 @SimonCropp

[JakeGinnivan]

Ignore, can fix a few bugs in our parser which will make it better