toddmotto/echo — pull request #42 by vzwick (2014-04-06 20:36:15+00:00)
Title: Query for `<img>` elements only

While this is probably a case of micro-optimisation, [there is a performance gain of some 5%](http://jsperf.com/queryselectorall-with-attr-only-and-with-element-type) when querying for `img[data-echo]` as opposed to `[data-echo]` only.