PyTorch 1.7.0 Compatibility Updates (#1233)

* torch 1.7.0 compatibility updates

* add inference verification

utils/torch_utils.py

@@ -74,7 +74,7 @@ def initialize_weights(model):
         elif t is nn.BatchNorm2d:
             m.eps = 1e-3
             m.momentum = 0.03
-        elif t in [nn.LeakyReLU, nn.ReLU, nn.ReLU6]:
+        elif t in [nn.Hardswish, nn.LeakyReLU, nn.ReLU, nn.ReLU6]:
             m.inplace = True