TODO

Coming next

Update the destroy method so it also removes lazyload's modifications to DOM elements (element.llStatus and element.llTimeout)
Use requestAnimationFrame before resetting the sources and calling the callbacks? See lazysizes.
Consider not using the load event listener for videos.
Consider creating a subset of options and defaults for the static load method, and document it
DRY the // Annotate and notify loading part in lazyload.setSources
Release a new beta major with cancel_on_exit defaulting to true
When cancel_on_exit is false, unobserve elements as soon as they start loading (as of before 15.2.0).
Check how LazyLoad behaves when a page was updated using DOM morphing. If only the data-attributes were updated, how do one forces LazyLoad to read from them again?
Check out how the plugin architecture of lazysizes work

Test more modules