1.5.0

Support Captions and Subtitles

• Add support for Captions & Subtitles on asset create, as well as later via direct track creation
• Improve test coverage/examples
• Removed the lists of operations from examples as they go out of date too frequently
• Remove unused "Language" param from Inputs
• Improved validation of type on assets
• Bump release version

Note: v1.4.0 is skipped and should not be used