Convert element name to be stored as atom instead of string.
Fix comments and variable names for atom wrapper.
use a more appropriate embedding url
Merge pull request #2864 from zmike/embedding-iscool_jpg

use a more appropriate embedding url
Merge pull request #2844 from glennw/atom-element

Convert element name to be stored as atom instead of string.
Fix issue with auto table layout when cells have multiple fragments. Fixes some layout issues related to #2554.
Merge pull request #2865 from glennw/wiki-layout-2

Fix issue with auto table layout when cells have multiple fragments. Fix...
Implement MessageEvent::dispatch.

This avoids duplicating the dispatching code for multiple postMessage
implementations.
Implement Worker.postMessage.