[smarkdown] added handling of duration via %dur: or %duration:
[smarkdown] added handling of duration via %dur: or %duration:

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