[MSE] Spec Updates Published

I have published updates to the Media Source Extensions
<https://dvcs.w3.org/hg/html-media/raw-file/default/media-source/media-source.html>
 spec.

Summary of changes:
Bug 25995 <https://www.w3.org/Bugs/Public/show_bug.cgi?id=25995> - Fix
conditions in "remove existing coded frames" step.
Bug 25999 <https://www.w3.org/Bugs/Public/show_bug.cgi?id=25999> - Change
appendWindowStart assignments to reference presentation start time.
Bug 26000 <https://www.w3.org/Bugs/Public/show_bug.cgi?id=26000> - Make it
explicit that SourceBuffer.remove() throws an exception if duration equals
NaN.
Bug 25846 <https://www.w3.org/Bugs/Public/show_bug.cgi?id=25846> - Update
end of stream algorithm to invoke the append error algorithm on decode
errors.
Bug 25850 <https://www.w3.org/Bugs/Public/show_bug.cgi?id=25850> - Specify
SourceBuffer.trackDefaults initial value and setter/getter behavior.
Bug 25998 <https://www.w3.org/Bugs/Public/show_bug.cgi?id=25998> - Move
presentation & decode timestamp checks after append window filtering steps.

Diffs:
https://dvcs.w3.org/hg/html-media/rev/cb96bc1c87c3
https://dvcs.w3.org/hg/html-media/rev/a5786410b334
https://dvcs.w3.org/hg/html-media/rev/f1e2049010b5
https://dvcs.w3.org/hg/html-media/rev/9990dffde761
https://dvcs.w3.org/hg/html-media/rev/f30ce20f7d59
https://dvcs.w3.org/hg/html-media/rev/4edf0ef324dd

Aaron