Reng - Simple backtracking regex engine

Related blog post: http://blog.marcinchwedczuk.pl/matching-regexes-using-backtracking

How to build:

./mvnw clean install

By default project requires JDK 17 to compile. You can change that by editing lines:

<!-- Java version -->
<maven.compiler.release>17</maven.compiler.release>

in pom.xml file. Project should compile under older JDK versions (like 11 or even 8) without any problems.