Added support for an automatic cache buster suffix on the bg image #56
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Folks who use a CDN can append their own cache buster to the
.css
file, but thebackground-image
entry in the CSS file would still end up being loaded from the browser cache.This change adds support for a
--cachebuster=random
parameter, which will append?<hash>
to thebackground-image: url(...)
, where<hash>
is a randomly generated 40-character hexadecimal string. This would force the new, possibly updated sprite file to be downloaded freshly.