Merge branch 'neural-network' into 'master'

.gitignore

.gitlab-ci.yml

java-wowa-training.iml

pom.xml

src/main/java/be/cylab/java/wowa/training/Example.java

...ain/java/be/cylab/java/wowa/training/HyperParameters.java

src/main/java/be/cylab/java/wowa/training/MainDL4J.java

src/main/java/be/cylab/java/wowa/training/MainTest.java

src/main/java/be/cylab/java/wowa/training/NeuralNetwork.java

src/main/java/be/cylab/java/wowa/training/Trainer.java

...ain/java/be/cylab/java/wowa/training/TrainingDataset.java

src/main/java/be/cylab/java/wowa/training/Utils.java

src/test/java/be/cylab/java/wowa/training/TrainerTest.java

...java/be/cylab/java/wowa/training/TrainingDatasetTest.java