MLCompute tvOS 14.0 Beta 3 to Beta 4 API Differences

MLCActivationLayer.h
Removed +[MLCActivationLayer eluLayerWithAlpha:]
Removed +[MLCActivationLayer relunLayerWithAlpha:beta:]
Removed +[MLCActivationLayer celuLayerWithAlpha:]
Removed +[MLCActivationLayer hardShrinkLayerWithLambda:]
Removed +[MLCActivationLayer softShrinkLayerWithLambda:]
Added +[MLCActivationLayer eluLayerWithA:]
Added +[MLCActivationLayer relunLayerWithA:b:]
Added +[MLCActivationLayer celuLayerWithA:]
Added +[MLCActivationLayer hardShrinkLayerWithA:]
Added +[MLCActivationLayer softShrinkLayerWithA:]
MLCLayer.h
Added -[MLCLayer supportsDataType:forDeviceType:]
MLCTensor.h
Added +[MLCTensor tensorWithDescriptor:fillWithData:]
Added +[MLCTensor tensorWithShape:fillWithData:dataType:]
MLCTrainingGraph.h
Added -[MLCTrainingGraph gradientTensorForInput:]