* Bump the document date.
* Mandate that the ID header must complete on the first page (to
remove any ambiguities about this requirement in RFC 3533).
* Remove reundant wording that rillian forgot to remove in 360a4117.
* Split the "Granule Position" section into subsections.
* Move the first paragraph of the "Other Implementation Notes"
section into the "Granule Position" section, add general seeking
implementation guidance, and be specific about the interaction
between pre-roll and pre-skip.
* Retitle the remaining contents of the "Other Implementation Notes"
section to "Packet Size Limits"
* Specify that all the header fields are REQUIRED (and add a
description of the Channel Mapping Table as a whole, so we can
say when it is REQUIRED).
* Specify that implementations MUST NOT reject headers with extra
data if they have an unknown minor version number.
* Add a reference to RFC 3629 (UTF-8).
* Minor formatting adjustments to vorbis-trim and vorbis-mapping
cites.
* Eliminate semicolons and terrible "Else, if" constructs.
Remove a redundant phrase from the previous commit.
Thanks to Tim for pointing this out.
Clarify what 'skipped' means.
Give a reference for the vorbis granulepos-trimming.
Commas and semicolons in the resampling decision list.
Capital SHOULD on treating unknown channel mapping families
as discrete.
Clarify why goes in the vendor string. Maybe needs an example?
'gstoggmux 1.0.12; libopus 1.2.3'
Remove a redundant word. 'could' already covers 'potential' and
the line is stronger without it.
And explicitly specify what we want included in EXTRA_DIST of doc/Makefile.am,
otherwise make dist picks up whatever random junk you might have laying around
in that dir at the time you run it.
Tweak the top level delegation targets, because this means distclean will be
run in the doc dir by default now without our help.
