v6.4.0

What's Changed

• refactor: reorganize attachments methods to match final API design by @vieiralucas in https://github.com/resend/resend-node/pull/717
• chore: remove duplicated export by @gabrielmfern in https://github.com/resend/resend-node/pull/719
• fix: inbound entity should still be called email by @vieiralucas in https://github.com/resend/resend-node/pull/721
• feat: return response headers on all responses by @gabrielmfern in https://github.com/resend/resend-node/pull/713
• fix: remove unsupported types by @CarolinaMoraes in https://github.com/resend/resend-node/pull/726
• feat: remove domain capability from the SDK API by @lucasfcosta in https://github.com/resend/resend-node/pull/728
• feat: add types for getting and setting contact property values by @Cisneiros in https://github.com/resend/resend-node/pull/730

Full Changelog: https://github.com/resend/resend-node/compare/v6.3.0...v6.4.0