Squashed 'libs/sticky-list-headers/' changes from b323b7b..de93695

de93695 minified version
ad4ee9e orig verison
9a5eaab Merge commit 'a3b27df9a6dbf70abe652e4a0fe0469c01f444e6'
fe83abb minified version
295932a refactoring and make bound object writable
feac2ee minified version
38e7c41 Merge commit '2a8e95c0e34febe69d154946e517b4e28dfb6f1f'
e088fd4 added mutation observer if something changes on original node
7218ef5 minified version
421e76d event handling
69f03f2 minified version
ecea712 refresh, rebuild and extend addEventListener for every original node element which will be cloned
c8d76aa removed log message
fac60cb minified version
ed98056 using group positiblity
818f03b minified
facc518 added scrollToElement function
e498772 minified
39ca19c on resize recalculate offfsets
c584191 minified
a39acb3 removing opacity if exists

git-subtree-dir: libs/sticky-list-headers
git-subtree-split: de936950f2b692bd636576d2a681daf53fd672bc
Merge commit '1c92e8337b39bd8b3677af3ec5b5f8186f64e680'