ascend/descend option for "OrderBy" method.

[coocood]

the "OrderBy" method needs an descending option.
or add another method like "OrderByDesc"

[coocood]

In my project, I added a new field "orderByDesc bool" in Hood struct, and changed "OrderBy(path Path)" to "OrderBy(path Path, desc bool)", but that's just a temporary work around, there should be multiple order by support and multiple group by support.

[eaigner]

I would just have added a Asc() and Desc() chainable method instead. No flag required and more readable.