The `link` helper does not accept `options`

[wout]

Unlike all other tag helpers, the link helper doesn't accept options. So you can't to do something like:

link "Something", to: Something::Index, options: aria_current(Something::Index)

private def aria_current(path)
  return {} of String => String unless current_page?(path)

  {"aria-current" => "page"}
end

because this is such a common use case, I've also been thinking about an additional helper to simplify this:

link_with_aria, to: Something::Index

But perhaps that a step too far.