SpatialDilatedConvolution is not supported

[begemotv2718]

Issue shows up when importing model from here http://hi.cs.waseda.ac.jp/~iizuka/projects/completion/en/

[begemotv2718]

Created pull request to fix this issue: #40
Successfully tested it on the model from here http://hi.cs.waseda.ac.jp/~iizuka/projects/completion/en/