Mid first assigment

.gitignore

.gitlab-ci.yml

bin/composer.phar

bin/evaluate.php

ci/docker_install.sh

composer.json

docs/EvaluationTree/class-hierarchy.png

docs/EvaluationTree/example.png

main.php

run.php

src/EvaluationTree/AdditionNode.php

src/EvaluationTree/BinaryNode.php

src/EvaluationTree/DivisionNode.php

src/EvaluationTree/EvaluationError.php

src/EvaluationTree/MultiplicationNode.php

src/EvaluationTree/Node.php

src/EvaluationTree/NumberNode.php

src/EvaluationTree/SubtractionNode.php

src/ParkingMachines/ParkingMachineCommand.php

src/Tests/EvaluationTree/ClassHierarchyTest.php