reduce minified size by using global lazyLoadXT='lazyLoadXT' variable
fallback docElement to document.body in old browsers
add autoLoad option
fix work with Zepto
change selector to img[data-src] (to don't affect usual images like tracking images, etc.)
remove classNojs in flavour of options.oninit.removeClass
support lazy-hidden and lazy-loaded css classes for effects
rename lazyloadall to lazycomplete
add support of global oncomplete handler
trigger lazy* event after global on* handler
add scrollContainer option
remove unused classNojs
fix jsDoc description
reorder variables
use natural ordering in elements array (speed up adding new elements)
fix for scrollContainer option
fix autoload addon to use lazycomplete event
add fadein and spinner effects to src