Updated Unit Tests, Added new methods and entities

Added a global settings file, updated the client and unit tests to refer
to the settings.
Updated the CaseBase to include Case Type in the request.
Deleted deprected endpoints, Social Account and History.
Updated the Enums to consts.

Fixing tagging branch

Initial release did not include amendments needed to ApiClient class. Re-releasing with new tag to facilitate Composer tagging.

Tagging branch for release

Tagging branch for release