Change sizes from a <media-query> to a <media-condition>. Closes #132.
Define parsing of sizes in a way that doesn't require parsing the whole attribute. Fixes #136 Fixes #135
s/token/component value/, empty the list after a comma, ignore whitespace tokens
Ignore whitespace here also (sizes=' 500px')
Merge pull request #137 from zcorpan/fix-136

Define parsing of sizes in a way that doesn't require parsing the whole ...
Change the fallback value of sizes from 300px to 100%. Fixes #127
Merge pull request #139 from zcorpan/fix-127

Change the fallback value of sizes from 300px to 100%. Fixes #127
Allow percentages in sizes and say that they're relative to the viewport. Other units same as in MQ. Ban negative sizes. Fixes #138
Merge pull request #140 from zcorpan/fix-138

Allow percentages in sizes and say that they're relative to the viewport...
Tighten up the allowed syntax for sizes. Allow the attribute to be omitted when using w descriptors.
Merge pull request #141 from zcorpan/tweak-authoring-reqs-sizes

Tighten up the allowed syntax for sizes. Allow the attribute to be omitt...
Don't set intrinsic width from sizes since that's bogus. Don't set the intrinsic resolution here; we return the density and the HTML spec handles the resolution with 'current pixel density'. Fixes #121 Fixes #107
Remove support for % in sizes since it's confusing if it refers to the image or containing block or viewport. (ack johns)
Merge pull request #144 from zcorpan/remove-sizes-percentage

Remove support for % in sizes since it's confusing if it refers to the i...
Require that 'w' matches the image width. Fixes #143
Merge pull request #145 from zcorpan/fix-143

Require that 'w' matches the image width. Fixes #143
Don't allow srcset='url1,url2' in the syntax. Fixes #123
Avoid adding src to the source set when using 'w'. Fixes #119
Add currentSrc property to the IDL.
Trying this again.