Prepare azcore v1.3.0 for release
# Release History
-## 1.3.0 (Unreleased)
+## 1.3.0 (2023-01-06)
### Features Added
* Added `BearerTokenOptions.AuthorizationHandler` to enable extending `runtime.BearerTokenPolicy`
with custom authorization logic
* Added `Client` types and matching constructors to the `azcore` and `arm` packages. These represent a basic client for HTTP and ARM respectively.
-### Breaking Changes
-
-### Bugs Fixed
-
### Other Changes
* Updated `internal` module to latest version.
* `policy/Request.SetBody()` allows replacing a request's body with an empty one
