Merge branch 'develop'

.gitlab-ci.yml

build.gradle

gradle/wrapper/gradle-wrapper.jar

gradle/wrapper/gradle-wrapper.properties

gradlew

gradlew.bat

sablecc-runtime/build.gradle

...org/sablecc/sablecc/GenerateAlternativeCodeForParser.java

src/main/java/org/sablecc/sablecc/In_Production.java

src/main/java/org/sablecc/sablecc/lexer/Lexer.java

src/main/java/org/sablecc/sablecc/parser/Parser.java

src/main/resources/org/sablecc/sablecc/lexer.txt