Version 1.21.0

New functionality and features

• Add types for Structured Metadata functions (#359)
• Added types for upload response callback (#360)
• Updated promise types for resources methods (#358)

Other Changes

• Add rate_limits back to responses sent from Admin API (#361)
• Align all structured metadata tests with reference implementation (#351)
• Improve provisioning api tests (#354)
• Refactor in a wait period for eager uploads (#355)