More WHATWG patches applied to HTML5.1 Nightly

Dear public-html,

Here are additional WHATWG changes for your review-some have been merged, some require additional review and are grouped by area below.

HTML5.1 Nightly is now in sync with the current WHATWG spec (SVN 8576 from 2014-04-14).

Please reply back with any comments or issues.

Thanks,
Erika

----

===A11y-related changes (not merged, needs review)=====

    [ac] (1) Adjust how <figure> gives captions to <img>s to exclude cases where <img>s are not alone
    Fixing https://www.w3.org/Bugs/Public/show_bug.cgi?id=25055 (8550)
https://github.com/w3c/html/commit/1c8fe52cda49c2708de836d2457712ace842327e

===Merge candidates for W3C Canvas spec (merged but not published in html source)=====

    [e] (0) Add a non-normative note that repeats the normative text in a different way to be clear. (8567)
https://github.com/w3c/html/commit/7fc1593fd88668f24e65cc6e00a42209ee04bac8

    [giow] (0) Define that the ImageData constructor's resulting object's contents are zero. (8566)
https://github.com/w3c/html/commit/06fbddc8c118c1bf847182f42db49ec30d40c38e

    [giow] (0) Make the matrix arguments to addPath() and addPathByStrokingPath() optional, since they're the last argument and nullable in both cases. (8565)
https://github.com/w3c/html/commit/fe9978d8cb5f1d982233c9106ad929274d86b0ef

    [giow] (0) Make addHitRegion() honour clip regions. (8564)
https://github.com/w3c/html/commit/41f9118d39fccf4a4ccef375da6ffa7d1c01a67a

    [giow] (1) Rename Path to Path2D (8563)
https://github.com/w3c/html/commit/0545c22ca8aff141f1b6af6af6aced155d5a00cd

    [e] (0) Clean up wording in stroke logic (8562)
https://github.com/w3c/html/commit/3de7ed86b3c5601bfed00c38554346fd91c50f90

    [c] (1) Allow <img>-based and <input>-based image maps as canvas fallback (hit regions excludes those separately) (8548)
https://github.com/w3c/html/commit/4d3c5d45c6c6e8cdc86eef54de88de050b9dc02c

===Video and Audio changes (merged)=====

    [e] (0) Clarify the interaction of looping and seeking.
    Fixing https://www.w3.org/Bugs/Public/show_bug.cgi?id=24955 (8575)
https://github.com/w3c/html/commit/83be39e63f494bbcb18d774f8d57869aa1814fce

    [giow] (1) try to fix ambiguous task queuing (which source should be used), for <track>
    Fixing https://www.w3.org/Bugs/Public/show_bug.cgi?id=25045 (8574)
https://github.com/w3c/html/commit/9eee91df3a9f71be08c46729dac37e0bb7417ee3

    [e] (0) Try to improve wording for track selection text.
    Fixing https://www.w3.org/Bugs/Public/show_bug.cgi?id=24895 (8552)
https://github.com/w3c/html/commit/0dc300922bb823aa5bb51c1d55e222da370227ca

    [e] (0) Try to clarify looping rules
    Fixing https://www.w3.org/Bugs/Public/show_bug.cgi?id=24955 (8551)
https://github.com/w3c/html/commit/21773a6bfe2533bed342598f1b1140b788d0f2ff

===Other normative changes (merged)=====
    [giow] (1) Try to be more compatible in <fieldset> rendering rules.
    Fixing https://www.w3.org/Bugs/Public/show_bug.cgi?id=24961 (8576)
https://github.com/w3c/html/commit/4bcf03f9a12ff8f5b0a11115e3cb89a76e5a589d

    [giow] (1) Add some autofill keywords for usernames and passwords.
    Fixing https://www.w3.org/Bugs/Public/show_bug.cgi?id=25236 (8573)
https://github.com/w3c/html/commit/8915285f6da3edb411522d62fccc2f83b15f0ecf

    [e] (0) Sync with WebIDL over 'unenumerable'.
    Fixing https://www.w3.org/Bugs/Public/show_bug.cgi?id=22600 (8571)
https://github.com/w3c/html/commit/133b78afdeb9235e85332d8d9988c861daadab9d

    [giow] (1) Make 'autocomplete' and 'autocompleteerror' bubble, like 'submit'. (8569)
https://github.com/w3c/html/commit/3a96770bc7c14a2173c59eaecc89b47bbd7a5124

    [agiow] (1) requestAutocomplete()
    Fixing https://www.w3.org/Bugs/Public/show_bug.cgi?id=22701 (8568)
https://github.com/w3c/html/commit/498d1395f45bba94c1e4fab5174ed984ca8382f2

    [e] (0) Add some info about keygen. (8560)
https://github.com/w3c/html/commit/fd1f8507a52c2cd48c282b60f07d01569172057a

    [giow] (3) Define document.title in an SVG context since apparently that's gone out of SVG now. (8559)
https://github.com/w3c/html/commit/2fb87bb6cfda274b9d49fdbe31d7527751512346

    [c] (2) rel='shortcut icon' requirement changes; extra sample table for sorting (8558)
https://github.com/w3c/html/commit/20fca38b3796df90ffa8796bdd8eaf8d0bc10503

    [giow] (3) Be more explicit about handing off to external software during navigation. (8555)
https://github.com/w3c/html/commit/ae3b4ad5d602926262a0144aca3a747a09d15a9e

    [cgiowt] (3) Drop filterRes SVG attribute from the HTML parser, since it has fallen into disrepute.
    Fixing https://www.w3.org/Bugs/Public/show_bug.cgi?id=24900 (8554)
https://github.com/w3c/html/commit/3945a436058da2702f0fa6959d78ecd190f64cf4
    [giow] (0) Make microtasks work in workers too, since eventually we'll want the JavaScript stuff to hook into this. Fixing https://www.w3.org/Bugs/Public/show_bug.cgi?id=25089 (8553)
https://github.com/w3c/html/commit/932700efd8582fb173a948994960b3d13cd37320

===Editorial changes (merged)=====
    [e] (0) Editorial tweaks (8572)
https://github.com/w3c/html/commit/bbd2f58515cb70b3dc83fc250814514f3df9e28a

    [e] (0) cross-reference clash (8570)
https://github.com/w3c/html/commit/395db0a75eaadcad042b022939f1e4e15f9b4dde

    [e] (0) Internal annotations for future img stuff (8561)
https://github.com/w3c/html/commit/2ed5d0bd43e1b49494efd6747469158bdd8fed49

    [e] (0) Missing semicolons in index (8549)
https://github.com/w3c/html/commit/922dd3d6f6857bc1cc68095bb06fe5c75b6dd91e

    [e] (0) Update non-normative Worker text to mention blobs
    Fixing https://www.w3.org/Bugs/Public/show_bug.cgi?id=25079 (8547)
https://github.com/w3c/html/commit/ac2da1d269a16a33d2220843b930cffe2447a7aa