Version 0.2.0

• ptax.close returns an instance of the `CloseReport`` model instead of a dict.

Before:

>>> from pyptax import ptax
>>> ptax.close('01-20-2020')
>>> {'datetime': '2020-01-20 13:09:02.871', 'bid': '4.1823', 'ask': '4.1829'}

After:

>>> from pyptax import ptax
>>> ptax.close('01-20-2020')
>>> CloseReport(datetime='2020-01-20 13:09:02.871', bid='4.1823', ask='4.1829')
>>> ptax.close('01-20-2020').as_dict
>>> {'datetime': '2020-01-20 13:09:02.871', 'bid': '4.1823', 'ask': '4.1829'}

• Create a client to deal with the service request to add support for new features.
• Add PyPI publish commands.
• Fix typo in documentation.