MatthewMueller/cheerio — pull request #386 by kpdecker (2014-02-21 23:14:58+00:00)
Title: Optimize add and remove class cases

Test: attributes - Add Remove class (file: jquery.html)
cheerio x 1,953 ops/sec ±1.70% (94 runs sampled)
old x 718 ops/sec ±2.92% (88 runs sampled)
jsdom x 55.61 ops/sec ±1.16% (74 runs sampled)