mvn package
If everything went according to plan you will see a successful build and 36 existing tests will run and pass.
mvn clean && mvn package
java -jar target/reng-1.0-SNAPSHOT-jar-with-dependencies.jar.
If a stackoverflow error occurs try:
java -jar -Xss10M target/reng-1.0-SNAPSHOT-jar-with-dependencies.jar.
Positive and Negative lookaheads have been implemented.
Backreferences haev also been implemented.