v1.8.0

Improvements

• Added Session.version_info() to check which version of Viya the session is connected to.
• Updated the properties= parameter of model_repository.create_model() to accept a dictionary containing
  custom property names and values, and to correctly indicate their type (numeric, string, date, datetime) when
  passing the values to Viya.
• Added services.saslogon for creating and removing OAuth clients.

Changes

• Deprecated core.platform_version() in favor of Session.version_info().
• A RuntimeError is now raised if an obsolete service is called on a Viya 4 session (sentiment_analysis,
  text_categorization, and text_parsing)
• Replaced the JSON cassettes used for testing with compressed binary cassettes to save space.
• Updated the testing framework to allow regression testing of multiple Viya versions.
• Refactored the authentication functionality in Session to be more clear and less error prone. Relevant
  functions were also made private to reduce clutter in the class's public interface.

Bugfixes

• Fixed an issue with register_model() that caused invalid SAS score code to be generated when registering an
  ASTORE model in Viya 3.5.
• Fixed a bug where calling a "get_item()" function and passing None would throw an error on most services instead
  of returning None.
• Fixed a bug that caused the authentication flow to be interrupted if Kerberos was missing.