⭐ New features

• Upgrade baseline to Spring Framework 7 and Spring Boot 4
• Update test infrastructure to JUnit 6
• Add support for jSpecify annotations #1184
• Redesign command programming model #1206 #1158
• Redesign test utilities and APIs
• Add number input type #849
• Add mandatory flag to string input #844
• Introduce new command builder DSL #1211
• Add support to print annotated method result to the standard output
• Add debug mode

🚀 Enhancements

• Improve command error message by including offending group name #291
• Improve error reporting in InteractiveShellRunner implementations
• Simplify availability provider configuration by using a new attribute in the Command annotation instead of a separate annotation

🆙 Dependency updates

• Reactor 3.8.1
• Spring Framework 7.0.2
• Spring Boot 4.0.1
• jLine: 3.30.6
• st4: 4.3.4

📘 Documentation updates

• Update documentation with new annotations #1172
• Update getting started guide with new annotations #1171
• Add sample Shell application for Spring Petclinic
• Update Antora resources
• Refine reference documentation: e3cb937
• Attach Javadocs to Antora

🛠️ Tasks

• Remove Spring Boot dependencies from core module #200
• Remove JLine dependency from core module
• Remove compile time dependency to slf4j #1214
• Remove dependency to commons-io #1215
• Move core APIs under a dedicated named package
• Move core commands from spring-shell-standard to the core module #1212
• Add spring code formatting plugin to the build #1185
• Update build tool to Maven
• Update release process to use Spring IO GitHub Actions
• Move built-in commands to the main command package
• Remove unused APIs
• Remove unused Spring Boot properties

❤️ Contributors

Many thanks to all contributors who worked on this release! @piotrooo @czpilar @PabloMartinez01 @jphughes88 @nhomble @Nico-DF

Full Changelog: v3.4.1...v4.0.0