Release 4.8.1

[superchilled]

Description

This PR follows on from #269 to provide more idiomatic usage of options hash for the Archives#create method. Specifically it:

• Changes multi_archive_tag and stream_mode in the valid_opts array defined in Archives#create to snake_case from camelCase
• Adds an ivar and attr_accessor for stream_mode in the Archive class
• Adds a test for creating an archive with a specific stream_mode

Motivation and Context

#269 fixed a bug whereby the mutliArchiveTag and streamMode properties weren't being passed to the API endpoint. This PR makes the setting of those properties via the Archives#create method more idiomatic.

How Has This Been Tested?

Unit tests added and//or ammended to test the functionality.

Example Output or Screenshots (if appropriate):

n/a

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.