Use the global MaybeString function.
getXyzUrl -> xyzUrl
Use XyzResult structs and Extract methods.
Rework token creation to use Result structs and Extract.
Update identity v3 tests.
Provide expires_at in test fixtures.
Missed a return. Thank you unit testing
Update the acceptance tests.
Trailing `s` :fire:
Comment the `header` field.
Merge pull request #212 from smashwilson/identity-v3-conformity

Identity v3 Conformity