move --help from stderr to stout

[ondohotola]

If I run --help I have to add 2>&1 before I can pipe it through less which I don't have to do for --list.

I often forget and then have to quit less, repeat the command, with the redirection.

[jqnatividad]

This requires tweaking docopt a bit.

Added it to the backlog @ondohotola .

[ondohotola]

Thanks.

[jqnatividad]

To confirm, looking at GNU guidelines...

https://www.gnu.org/prep/standards/standards.html#g_t_002d_002dhelp

It does specify that --help and --version should both go to stdout, not stderr.

[jqnatividad]

Moved qsv_docopt crate to https://github.com/dathere/qsv-docopt.

Fixes will be done there going forward.

@rzmk, also will implement the enhancement there so qsv pro can show usage text. Thinking of using markdown on all usage text so it looks prettier on qsv pro...

[rzmk]

If switching to markdown for the usage text then it may be neat to render it as formatted in the terminal too:

• This crate may be useful: https://github.com/Canop/termimad
• This other one's in alpha: https://github.com/guilhermeprokisch/see I think it's a CLI tool actually

[jqnatividad]

termimad looks awesome @rzmk!

Apart from styling, it handles scrolling too!