Merge pull request #88 from srvbots/master

update
Merge pull request #89 from srvbots/master

up
Merge pull request #92 from srvbots/master

profile统计中的ncalls不应该为历史累计值
Merge pull request #93 from srvbots/master

up
需要添加关闭账号注册等功能
https://github.com/kbengine/kbengine/issues/94
Merge pull request #9 from kbengine/master

update