Editorial fix
Add text to tell how to obtain [1,256] weight from 1 octet field

This wording once existed in priority branch in github, but missing in
the current draft.
Merge pull request #449 from tatsuhiro-t/editorial-fix-1

Editorial fix
Merge pull request #450 from tatsuhiro-t/editorial-fix-2

Add text to tell how to obtain [1,256] weight from 1 octet field
Adding 's'
Making proposal for fixing problems identified in #451.
Missing word correction.
fixing typo
Merge pull request #452 from dret/patch-1

fixing typo
Simplify stream priority.
fixing typos
Merge pull request #455 from ZumZoom/typo-fix

fixing typos
add missing 'to'
Merge pull request #459 from phluid61/copy-editing

add missing "to" in WINDOW_UPDATE
reinstitute per-DATA compression
Editorial fix
More editorial fix
Merge pull request #461 from summerwind/editorial-fix

Editorial fix
fix broken xrefs
move error text from setting to flag