Mostly just being more verbose.

This clarifies the meaning in surround configurations and better
distinguishes it from 'rear center'.

Add sections on VLC, foobar200, and Rockbox.
Be more complete about listing which features of the format are
 actually supported by each implementation.
Still need to do more testing for Chrome, FFmpeg, and libav.

We mean to make .opus only for degenerate--not concurrently
multiplexed or grouped--but optionally sequentially multiplexed
or chained physical Ogg streams.

However, we don't mean to say you can't use this draft with
such streams.

Also, replace the reference to RFC3534 with RFC5334, which
obsoletes the previous reference by defining video/ogg and
audio/ogg.

This is based on the experiment described in
http://tools.ietf.org/html/draft-sheffer-running-code-01

I've listed several major implementations. Their formatting
could probably be better. More obviously, this really demonstrates
the need for a good test suite to evaluate converage and compliance
with all these different implementations.

This is true, but not important to understanding the limitation.

Would cause the preemphasis and deemphasis to fail, but only with
custom modes enabled.

Was causing the testvector to pass with lower quality, though
practically there was no quality degradation.

Should slightly improve coverage and reduce code size

This avoids a warning about obsolete AM_CONFIG_HEADERS() on more
recent autoconf. The new macro has been around at least since
autoconf 2.60. So this should be safe.

quant_band() now only handles the level0 case.

Fixes an MSVC double truncation warning.

This fixes a truncation warning in MSVC:

warning C4305: 'initializing' : truncation from 'double' to
'const opus_val16'.

opus_val16 is a float in the floating point build and an
int16 in the fixed-point build. The table isn't used in
the fixed-point build, but the compiler would presumedly
warn in that case as well.

Also fixes an issue with 40- and 60-ms frames using the repacketizer.

Can now work up to full-band and uses lsb_depth to fix the noise issue.

http://www.ietf.org/mail-archive/web/codec/current/msg02951.html

The command line has changed, for the better, but we need to
update the way we call it. Also adds an install hint if it's
not found on the path.

NB I tried to detect and fallback to the old syntax for the
version 1 (TCL) implementation but this is hard because it
doesn't support any switches (like --version) and it no
longer parses our remote entities.

The max reduction now depends on intensity threshold too.