Complex-valued Neural Networks and Variational Dropout

This is a minor mid-month release.

The following features were added:

• Complex Transposed Convolutions # 8, squeeze/unsqueeze methods for Cplx # 7, and support for view and view_as methods for Cplx # 6 by Hendrik Schröter
• Tensor-to-Cplx converter layers for special torch format of complex tensors (last dim is exactly 2) see torch.fft

The following bugs were fixed:

• Shape mismatch in nn.init.cplx_trabelsi_independent_, which prevented it from working properly # 11