V3.0.0-beta Release Note

1 [Feature]: iOS dispatch a log event instead of writing log directly, so the programmer can decide whether to show log or not. https://github.com/Tencent/VasSonic/commit/69c4e34c8ac84ceced0b85d68573a9491570d065 2 [Feature]: iOS add Sonic event statistics, so the programmer can receive different Sonic state notification. https://github.com/Tencent/VasSonic/commit/cfd982f363b9e5705036cabc061a1a705453b329 3 [bug] : fix ConcurrentModificationException and NPE when URLConnection try getHeaders. https://github.com/Tencent/VasSonic/commit/d64415fd73f6ab449d2d437e7169fd3c08fd0384

V3.0.0-beta 更新公告 1【特性】：iOS把日志打印修改成一个统计事件类型，以便开发者决定是否需要输出log https://github.com/Tencent/VasSonic/commit/69c4e34c8ac84ceced0b85d68573a9491570d065 2【特性】：iOS增加Sonic各种状态下的事件回调，以便开发者可以监听Sonic的不同状态。https://github.com/Tencent/VasSonic/commit/cfd982f363b9e5705036cabc061a1a705453b329 3【bug】：Android 修复获取HTTP 头部时出现并发修改错误的bug https://github.com/Tencent/VasSonic/commit/d64415fd73f6ab449d2d437e7169fd3c08fd0384