(Stable) torch.special
A torch.special module, analogous to SciPy’s special module, is now available in stable. The module has 30 operations, including gamma, Bessel, and (Gauss) error functions. 
Refer to this documentation for more details.
(Stable) nn.Module Parametrization
nn.Module parametrizaton, a feature that allows users to parametrize any parameter or buffer of an nn.Module without modifying the nn.Module itself, is available in stable. This release adds weight normalization (weight_norm), orthogonal parametrization (matrix constraints and part of pruning) and more flexibility when creating your own parametrization.