Intrinsic size should be the size of the img, not picture
Added sizes to img
Changed variable from child to el
Fixed img algorithm to take both src and srcset into account
Fixed tabs and contains
Merge pull request #95 from yoavweiss/img_srcset_sizes

Got @tabatkins's lgtm,so merging
Added sizes to img
Fixed img algorithm to take both src and srcset into account
Fixed tabs and contains
Intrinsic size should be the size of the img, not picture
Merge pull request #94 from yoavweiss/intrinsic_size_img

Intrinsic size should impact img, not picture
Initial note regarding @viewport and iframes
some fix ups
Added that the parser can also not be aware of final viewport
Fixed tabs
Fixed links
Merge pull request #96 from yoavweiss/at_viewport

Note regarding @viewport and iframe
Fix accessibility line. Make spec build clean again.
Make HTMLPictureElement inherit from HTMLElement. Fixes #93
Merge pull request #99 from zcorpan/fix-93

Make HTMLPictureElement inherit from HTMLElement. Fixes #93