fix(incoming): 解决存量缓冲内容读取失败问题 (#573)

* fix(incoming): 解决存量缓冲内容读取失败问题

* fix(index): 测试完需要清理hack逻辑

fix(incoming): 到达最大限制后，不再记录包内容 (#560)

fix(context): req记录context，防止close和finish事件清理后无法上报 (#557)

fix(domain): 清理domain的时候，移除挂载在domain的context (#554)

fix(npm): 修复npm发布失败问题

fix(ajax): 兼容hostname不存在情况

fix: use timestamp instead of Date object (#511)

Merge pull request #505 from Zack921/master

fix: close #504

docs: update readme

Merge pull request #481 from Zack921/master

feat: hack https.createServer