Please optimize the code

[linkoog]

Please split up the CommandLine class? This class is too long, It's too difficult to read.

[remkop]

Splitting up the CommandLine class would break binary compatibility; all existing applications using picocli would have to modify their code when upgrading to a new version of picocli. I am currently not ready to do so.

[remkop]

I edited my previous comment: I meant to say existing applications using picocli would have to modify their code.