Merge branch 'biz' of code.dianpingoa.com:arch/cat into biz-abtest
Refine CatFilter
Merge branch 'biz' of https://github.com/dianping/cat into biz-abtest
add a abtest codec
Merge pull request #89 from ainilife/biz-abtest

ABTest improve
refator metric analyzer
Merge branch 'biz' of github.com:dianping/cat into biz
modify the version