Dante

update latest libfacedetection for iOS

Current in the middle of other stuff. Update mobile code should be ok but may delay for a few month.

here it is @fengyuentau

这个跟camera2无关，我用camera1也这样，只是时间要长点，且不确定是不是我的手机固件有问题。。。5.1的

pip3 install requests 缺啥装啥

+1 AndroidStudio 3.6 compileSdkVersion 28