Please keep the SC language for Low Vision SCs Fixed for 2.2

The SC's for low vision (primarily) 1.4.10 Reflow, 1.4.11 Non Text
Contrast, 1.4.12 Text Spacing and 1.4.13 Content on Hover or Focus have
done a lot to close the accessibility gaps for low vision.

More work is needed, but the progress made is significant. The LVTF needs
to look at the new SCs (as is) and see how the needs identified in our
requirements document have meet by including these SCs in 2.1.

There are problems that have been identified, but we have not accumulated
enough feedback to make normative changes. Developers need time to learn
these SCs. They are not easy.

I believe changing these SCs would have two negative effects that would
overwhelm any benefits: (1) We may make premature choices may need further
correction --spreading confusion, (2) We do not want to impede adoption.

There will be plenty of time to change these criteria once we have a more
significant population of adopters.

The research on low vision is getting clearer and more useful for inclusion
in standards every year. Many of the questions we raised in the
requirements document are answered today -- just two years later.

I think the 2.1 team did a good job on these SCs. We can let them sit a
while before we make changes.

Best, Wayne