[MSE] Spec updates published

I posted more changes to the Media Source
Extensions<http://dvcs.w3.org/hg/html-media/raw-file/tip/media-source/media-source.html>
 spec.

Summary of changes:

December 8th update:
- Added MediaSource.getSourceBuffer() methods. (Bug
17002<https://www.w3.org/Bugs/Public/show_bug.cgi?id=17002>
)
- Added code to move method algorithm after parameter & return type info.
- Cleaned up Section 2 a little more and marked non-normative text.

Today's update:
- Added MPEG-2 Transport Stream byte stream specification (Bug
17094<https://www.w3.org/Bugs/Public/show_bug.cgi?id=17094>
)
- Added "append sequence" concept and text that enforces abort() being
called for an out-of-order append.
- Renamed old "track buffer" term to "decoder buffer".
- Redefined "track buffer" to mean the per-track buffers in SourceBuffer.
- Miscellaneous editorial fixes from a proofreading pass.

Diffs:
December 8th : http://dvcs.w3.org/hg/html-media/rev/ee6e8ae9337c
Today: http://dvcs.w3.org/hg/html-media/rev/e1c91093dfdc

Enjoy,
Aaron