Merge branch 'master' into loss

Author: Shashi456

Tests/TensorFlowTests/LossTests.swift

@@ -169,6 +169,7 @@ final class LossTests: XCTestCase {
         ("testMeanSquaredErrorLoss", testMeanSquaredErrorLoss),
         ("testMeanSquaredErrorGrad", testMeanSquaredErrorGrad),
         ("testSquaredHingeLoss", testSquaredHingeLoss),
+        ("testHingeLoss", testHingeLoss),
         ("testSoftmaxCrossEntropyWithProbabilitiesLoss",
          testSoftmaxCrossEntropyWithProbabilitiesLoss),
         ("testSoftmaxCrossEntropyWithProbabilitiesGrad",