This release includes the following improvements
- Use Gradle as a build system
- Use the standard directory layout
- Change the package name to com.devng.starsudoku
- Adjust the documentation
- Add Launch4J configuration and a launch4j Gradle task
- An Windows EXE file can now be generated
- Small code improvements
- Remove the web page source folder, since there is no web page anymore
- Update the .gitignore file