Usage of unwait(…) — interrupt timeouts for some elements

How to interrupt timeouts for some elements?

Compact syntax with timing methods:

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// $('.some').wait(timeout)…
$('.some').unwait();

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// var timer = setTimeout(function(){ … }, timeout))
clearTimeout(timer);

$('.some').doSome().wait(timeout).doLater();

$('.some').doSome().wait(first-timeout).jQueryStuff()
  .wait(second-timeout).doLater().jQueryStuff();

$.wait(first-timeout, function(){ … })
  .wait(second-timeout, function(){ … })
  .wait(third-timeout, function(){ … });