TTML10SE Actions/Issues Resolved

I've just pushed an update of TTML10SE ED [1] in which I believe I have
resolved the outstanding actions and issues.

I have not done the following yet:

(1) prepared a new SoD for the PER form of the document;
(2) prepared an update for list of changes document [2];
(3) performed a front to back review of the results;

I'll be on the call in the morning to discuss next steps.

[1] https://dvcs.w3.org/hg/ttml/raw-file/default/ttml10/spec/ttaf1-dfxp.html
[2] http://www.w3.org/2010/11/ttml-changes.html