Rewrite of first part of overview; flattening a little
Reindenting and reflowing text
Tweaks of header table and reference set descriptions
Reword the header field representations section
Header field emission work
s/except if/unless/
Merging completion into reference set emission
Fixes for header table management
Capitalize title
Moving primitives to the top level; reindenting and reflowing
Title change, plus an added reference
Updating representations
Editing encoding context update
Editing security considerations
Reindenting the static table
Capitalization