Release 0.7.0

This release includes a simplified client API that removes the unnecessary indirection caused by the Call struct, in addition to some notable dependency updates (hyper v1) that are part of the public API.

Major dependency updates:

• axum v0.6 → v0.7
• base64 v0.21 → v0.22
• hyper v0.14 → v1
• proc-macro-crate v1 → v3
• quick-xml v0.30 → 0.37
• reqwest v0.11 → v0.12

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Thanks to @pendulum-project, @elementary, @tweedegolf, @Conan-Kudo, @sdroege, @alexsaezm, @Best-HeyGman, and a mystery sponsor for supporting my work.