Fix link in IE8 note for JSON feature.
Update touch.json

Add note about IE backwards-compability project
Update screen-orientation.json

Added another article on this API
data update
Merge pull request #730 from jacksleight/patch-1

Fix link in IE8 note for JSON feature.
Merge pull request #731 from DanielLangdon/patch-1

Update touch.json
Merge pull request #733 from AurelioDeRosa/patch-1

Update screen-orientation.json
data update
Corrections about partial srcset support

Srcset is partially supported in Opera 21..23, iOS Safari 8 and Android Chrome 37.
Also s/modifier/descriptor/ to match spec terminology.
Missed partial support for Android Opera 22
Remove CSS "attr" as support matches css-gencontent
data update
Merge pull request #735 from zcorpan/patch-1

Corrections about partial srcset support
Add Chrome column-count issue with print stylesheets
When Firefox ships picture

https://bugzilla.mozilla.org/show_bug.cgi?id=picture-prefon is not fixed yet, so we don't know when it will ship.

This change matches srcset caniuse data.
Add bug to css animation bugs list

@keyframes are not supported in Firefox in inline or scoped stylesheets, which is against spec, but a known will-not-fix bug. See https://bugzilla.mozilla.org/show_bug.cgi?id=830056 and http://css-tricks.com/animate-to-an-inline-style/
data update
Merge pull request #739 from sunny/patch-1

Add Chrome column-count issue with print stylesheets
Merge pull request #740 from zcorpan/patch-1

When Firefox ships picture
Merge pull request #741 from glinden/patch-1

Add bug to css animation bugs list