[attribution] added the attribution extensions (automatically adds some text and a link for elements having a "data-attribution" attributes)
[attribution] added the attribution extensions (automatically adds some text and a link for elements having a "data-attribution" attributes)

ProgRT/deck.js,ProgRT/deck.js,alexjobs/deck.js-1,twitwi/deck.js,alexjobs/deck.js-1,twitwi/deck.js,alexjobs/deck.js-1,twitwi/deck.js,ProgRT/deck.js