Set version to 0.4.1

Bump to 0.4.0.post1

Bump version to 0.4rc.0.post1

Improves pytorch#694 (pytorch#712)

* Made all loggers public attribute
- method to setup logger

* Fixed flake8

Set version for a release

Added Polyaxon logger code with tests (pytorch#482)

* Added Polyaxon logger code with tests

* Improved code and updated docs

* Added no package tests

* Added PolyaxonLogger in handlers module

* Fixed docs warning

Bump version

Bump version

Nit: update docs (pytorch#196)