Deprecate DataAttr, StyleAttr, TitleAttr, FormEl (#174)

This change addresses #170 by deprecating some HTML helpers in favor of
using one of the styles as a main one, selected based on what I think is
the main use case.

- For `Data`, it's the attribute. I don't see much use of the `<data>`
element in the wild.
- For `Style`, it's the attribute. The `style` attribute is everywhere,
the `<style>` element is perhaps less so (but not much). This was the
hardest one to decide.
- For `Title`, it's the attribute. The `<title>` element only shows up
once per document.
- For `Form`, it's the element. I haven't seen much use of the `form`
attribute in the wild.

I know this is arguably not a "consistent" approach, but I think it
makes for a much nicer API, simply because the most-used option will not
be a suffixed version.

0 files changed, 0 insertions, 0 deletions