Upgrade to pytorch-1.0.1

We (@tlaibacher and myself) just realised this project is using an older version of pytorch (0.4.1). As we may be doing some work on this, it would be nice to get it upgraded to the latest stable on conda defaults (1.0.1). BTW, I checked and macOS builds are still not supported for pytorch... I wonder if the packages they build in pytorch.org are compatible with the defaults channel and if we could just re-distribute those in our stable channel for this purpose.

@heusch: could you please check what it would take for this package?

Base work on bob/bob.conda and bob/bob.devtools needs to be done to update these before your package can actually be tested against it.