Keep DocString paragraphs in help texts.

[jedie]

tyro removes all newline information from the DocString of a command.

What's about to keep them? Just apply textwrap.dedent() ?

Think it's because of remove_single_line_breaks here:

tyro/src/tyro/_fields.py

Line 112 in bee66d3

helptext = _strings.remove_single_line_breaks(

[brentyi]

Hi @jedie! I don't feel that strongly about this behavior but it's intentional.

Otherwise there can be wrapping artifacts where a docstring like

"""Some helptext that includes a
line break."""

ends up formatted as

|<-----container width----->|
 Some helptext that includes
 a
 line break.
|<-----container width----->|

instead of

|<-----container width----->|
 Some helptext that includes
 a line break.
|<-----container width----->|