parse logistic (aka sigmoid) activations

Author: Adrià Arrufat

tool/darknet2pytorch.py

@@ -271,6 +271,8 @@ def create_network(self, blocks):
                     model.add_module('relu{0}'.format(conv_id), nn.ReLU(inplace=True))
                 elif activation == 'mish':
                     model.add_module('mish{0}'.format(conv_id), Mish())
+                elif activation == 'logistic':
+                    model.add_module('sigmoid{0}'.format(conv_id), nn.Sigmoid())
                 else:
                     print("convalution havn't activate {}".format(activation))