[Screen Orientation] Best Practice wording comment

Just took a peak at the latest spec [1], since Chrome Canary breaks my code
made for the previous spec
and I have to update to a dual screen.orientation object|string context (It
was previously a string).

Good to see the new 'natural' keyword and angles.

1. One minor comment on the "Best Practice 1" box for the phrase:
"Never assume any kind of relationship between the screen orientation type
and the screen orientation angle"

"Any kind" seems too strong a statement, since there is a relationship
between type and angle during the length of a browsing context/runtime as
mentioned afterwards.

I suggest adding a "permanent" relationship qualification and/or
"cross-devices" dimension in that sentence.

2. I am noting that the definition 1 and 2 of "reading current screen
orientation type" is going to require that IEMobile and iOS change the
reporting of their current screen.width and screen.height to the correct
orientation, and stop reporting portrait only. I suppose that's a good thing
even if it might break a few scripts.

https://w3c.github.io/screen-orientation/#screenorientation-interface

-Bruno