[Feature Request] - Transposed AtrousConv2dLayer

[dengyueyun666]

There is AtrousConv2dLayer in Tensorlayer，but the transpose of AtrousConv2dLayer or De-AtrousConv2dLayer？
AtrousConv2dLayer uses tf.nn.atrous_conv2d in source code, why not reimplement a layer like De-AtrousConv2dLayer that uses tf.nn.atrous_conv2d_transpose?

[zsdonghao]

@dengyueyun666 Hi, I suggest to use English here, as many contributors are not Chinese, they can help you as well.

[DEKHTIARJonathan]

@dengyueyun666 We would much appreciate a PR on this topic. If you need any help, please contact us over Skype

[DEKHTIARJonathan]

Closing: #662