yahoo/arrow — pull request #79 by liangji101 (2013-04-27 10:36:04+00:00)
Title: upgrade to yui 3.8.0 and use original yui-seed

1. upgrade to yui 3.8.0 to avoid some unexpected bug in sandbox.
2. use original yui-seed (seems more stronger) as yui default seed.
3. According to windjammer team ,qunitjs can't be in whitelist http://bug.corp.yahoo.com/show_bug.cgi?id=6226130 , so we'd better make other test framework(mocha,jasmine,qunit...) as optional dependencies.