H5s 8.3 released GB28181 playback support

[linkingv]

8.3 0504 2019

1. Fix HIKVISION SDK to IP Camera online status not correct issue.
2. Manual Start Record Manual Stop Record multi instance support for one channel.
3. Add filename reply for all record API, so it is not suggested to add filename in API call.
4. Add SearchByFilename API to search a file for a API call.
5. Add Record disk rewrite percentage configuration.
6. Add HIKVISION SDK audio support.
7. Fix HIKVISION SDK GBK name display issue.
8. Fix GB28181 HIKVISION device RTP doesn’t have markbit when has audio.
9. Add GB28181 Alarm in support, can use this client to get client https://github.com/linkingvision/h5seventclient.
10. Add playback snapshot support.
11. Optimize HIKVISION get name slow issue by cache the name.
12. Support GB28181 playback speed control/move to
13. Support GB28181 PTZ control.

[linkingv]