Rewriting head

[Mikadore]

I'm interested in rewriting head. The code is only ~200 lines, and I think it can be significantly improved upon.

Here are some relevant issues:
#1800
#1799
#1358

As well as more generally:
#1358

Objectives:
Resolve aforementioned issues, mainly error handling & handling unencoded binary data, and increase performance (e.g. the NLines implementation needlessly uses a vector)

[sylvestre]

With pleasure!
As ride along, don't hesitate to port it to clap

[Mikadore]

Will do :)

[SuperSandro2000]

Could you maybe also implement #1822 ? 😄

[Mikadore]

Sure!