Based on #195.
Also implements proper handling of the given `Endpoint` in the
macos implementation of the `build_voice` method.
Updates to the latest coreaudio-sys and coreaudio-rs which include the
additional necessary frameworks.
Also adds a line that prints the name of the default device in the
`enumeration.rs` example.
Updates the CHANGELOG for this PR.
Closes#194.
Related to #180.
Related external issues:
- RustAudio/coreaudio-sys#4
- RustAudio/coreaudio-rs#57