piwik/piwik — pull request #6820 by fredli74 (2014-12-06 21:34:44+00:00)
Title: 6641 send beacon

Implemented navigator.sendBeacon as alternative tracking method. (#6641)
I choose to disabled beacon support by default as sendBeacon requests are POST requests (cross
domain awareness). It is easily enabled with `_paq.push(["enableBeacon”]);`.

It uses the same format as bulk requests to avoid posting parameters as forms (resulting in a lot of overhead data).