1.12.0

• Fix FIR diagnostics rendering in the IDE. Note this only works in the K2 Kotlin IDE plugin + setting the IntelliJ kotlin.k2.only.bundled.compiler.plugins.enabled registry key to false.
• When custom annotations are defined, report those names in FIR error messages.
• Support multiple custom annotations.
  • For Gradle configuration, the singular *Annotation properties are deprecated in favor of plural*Annotations SetProperty types.
  • For CLI consumers, the redactedAnnotation and unredactedAnnotation properties are now redactedAnnotations and unredactedAnnotations.
• Build against Gradle 8.12.
• Only report errors in FIR now. Removes the validateIr plugin option.
• No longer support K1.
• Raise Gradle plugin Kotlin target to 1.9.

This release goes all in on FIR for in-IDE error reporting!

What's Changed

• Update dependency gradle to v8.12 by @renovate in #274
• Update plugin binaryCompatibilityValidator to v0.17.0 by @renovate in #273
• Fix diagnostics reporting in the IDE by @ZacSweers in #275
• Move checkers to FIR only + run sample tests on KMP by @ZacSweers in #276
• Update dependency io.ktor:ktor-utils to v3.0.3 by @renovate in #277
• Report custom names in FIR errors by @ZacSweers in #278
• Support multiple custom annotations by @ZacSweers in #279
• Update plugin dokka to v2 by @renovate in #272

Full Changelog: 1.11.0...1.12.0