The markdown parsing is broken/disabled for release notes. Sorry about that, I'm chasing the source of a crash that's been bringing this website down for the last couple of days.
##### Breaking
- The command-line parsing strategy for options that were delimited by a pipe or comma has changed. These options are now parsed as a space delimited list, e.g `--option "arg1" "arg2"`.
- The option `--external-encodable-protocols` is deprecated, use `--external-codable-protocols` instead.
##### Enhancements
- Add experimental unused import analysis option `--enable-unused-import-analysis`.
- Add experimental automatic code removal option `--auto-remove`.
- Assign-only properties on structs with synthesized initializers are now detected.
- Added the `--retain-codable-properties` option to retain all properties on Codable types.
- Results for redundant protocol conformances will now list the inherited protocols that should replace the redundant conformance, if any.
- Added the `--retain-files` option to retain all declarations within the given files.
##### Bug Fixes
- Subscript functions required by `@dynamicMemberLookup` are now retained.
- A newline is no longer printed before non-Xcode formatted results.
- `--external-codable-protocols` now retains enums that conform to `CodingKey`.
- Fix public accessibility false-positive for actors.
- Fix public accessibility false-positive for property wrappers.
- Fix public accessibility false-positive for declarations referenced from a public `@inlinable` function.
- Fix public accessibility false-positive for function parameter default values.
- Fix public accessibility false-positive for inherited and default associated types.
- Fix public accessibility false-positive for generic types used in the generic argument clause of a return type.
- Fix public accessibility false-positive for retained/ignored declarations.
- Fix public accessibility false-positive for enum case parameter types.
- Fix public accessibility false-positive for properties initialized with generic specialized types.
- Types associated with assign-only properties are no longer identified as unused until the property is removed.
- Classes referenced in Info.plist as `NSPrincipalClass` and `WKExtensionDelegateClassName` are now retained.
2.15.0
##### Breaking
- Swift 5.7 and macOS 12 are no longer supported.
##### Enhancements
- Reduced indexing and analysis runtime by ~60%.
##### Bug Fixes
- Fix indexing multi-platform projects such as those containing watchOS extensions.
- Subclasses of CLKComplicationPrincipalClass referenced from an Info.plist are now retained.
##### Breaking
- None.
##### Enhancements
- Improve indexing performance when multiple index stores are provided.
- Added `--external-test-case-classes` option to allow external types to be treated as XCTestCase subclasses.
- Comment commands now support trailing comments, e.g `// periphery:ignore - explanation of why this is necessary`
##### Bug Fixes
- Fix handling of relative paths in `--file-targets-path`.
- Fix redundant public accessibility false positives when `--retain-objc-accessible` is enabled.
##### Breaking
- None.
##### Enhancements
- None.
##### Bug Fixes
- Fix index/report exclude regression.