Hyperwallet-sdk

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- Fix TypeError thrown when response status is 204 No content
- Fix tests for python 3
- Add updatePayPalAccount()
- Python uses os path join url causing issues on windows
- Add CVV field to the sdk
- Remove Relationship field from Server SDK
- Add Business Operating Name Field to User
- Add PayPal account status transitions

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- Added field "VerificationStatus" to User
- Client-token endpoint renamed to authentication-token

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- FIX: Resolved issue with restricted "Accept" & "Content-Type" headers to support only "application/json" or "application/jose+json"

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- Restricted “Accept” & “Content-Type” headers to support only “application/json” or “application/jose+json”
- Related resources “relatedResources” in error representation is added
- Added Authentication token endpoint

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- Added PayPal account endpoint

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- Added transfer endpoint