Merge branch 'release/0.6.3' into develop
[domains] openstreetmap is actually fairly responsive
[domains] check for twitter card = photo on twitter-image-rel-image

e.g. for 9gag info graphics
fix #23: Bad multiple og:video parsing
improve og-image/video-responsive plugins
better work with og: arrays
check content type on get image size
update cnn.video plugin to work with new og: arrays parsing
better solution for #23: do not create arrays for twitter; use width and height before og.video.url
fix imgur.com tests
basic extract embedURL by whitelist record direction
[domains] Lolwall - no more lols
[domains] gogoyoko - RIP
find single http://schema.org/VideoObject micro format object and parse it without inner objects
allow two variants of property: embedURL embedUrl
add more precision to iframe aspect ratio
add aspect-ratio precision to oembed generator
do not proxy ssl tag
support vid.ly cdn urls
fix timeout from cache code