See the generated blockstates.yml and populators.yml in ~/config/swappa for configuration.
To print out all blockstates to ~/config/swappa/dump.yml run /dump. This requires the permission node swappa.command.dump.
Building
Note: If you do not have Gradle installed then use ./gradlew for Unix systems or Git Bash and gradlew.bat for Windows systems in place of any gradle command.
To build Swappa, simply run gradle. The compiled jar is located in ./libs/.