0.2.0

Fixes:

• Fix docstrings in gaussian.py (#11) (@engintoklu)
• Fix for str_to_net(...) (#12) (@engintoklu)
• Hard-code network_device property to CPU for GymNE (#6) (@NaturalGradient)

Docs:

• Fix comment in the Gym experiments notebook (#5) (@engintoklu)
• Improve code formatting in docstrings (#3) (@flukeskywalker)
• Add documentation of NeptuneLogger class (#15) (@NaturalGradient)