AsyncTask.execute()默认是串行执行，单页面多接口时加载会很慢

[jizni]

建议改成AsyncTask.executeOnExecutor()并行执行

[TommyLemon]

感谢建议，可以直接改下源码，贡献一个 PR 哦，开源要大家一起参与才会更美好~
https://github.com/TommyLemon/Android-ZBLibrary/blob/master/ZBLibrary/src/main/java/zuo/biao/library/manager/HttpManager.java#L147

https://github.com/TommyLemon/Android-ZBLibrary/blob/master/ZBLibrary/src/main/java/zuo/biao/library/manager/HttpManager.java#L257

提 PR 步骤可参考

https://github.com/Tencent/APIJSON/blob/master/CONTRIBUTING.md#%E4%B8%BA%E4%BB%80%E4%B9%88%E4%B8%80%E5%AE%9A%E8%A6%81%E8%B4%A1%E7%8C%AE%E4%BB%A3%E7%A0%81