Merge branch 'timmermanns' into 'master'

src/test/resources/architectures/Alexnet.cnna

src/test/resources/architectures/ResNeXt50.cnna

src/test/resources/architectures/ResNet152.cnna

src/test/resources/architectures/ResNet34.cnna

src/test/resources/architectures/SequentialAlexnet.cnna

src/test/resources/architectures/ThreeInputCNN_M14.cnna

src/test/resources/architectures/VGG16.cnna

...test/resources/invalid_tests/ArgumentConstraintTest1.cnna

...test/resources/invalid_tests/ArgumentConstraintTest2.cnna

...test/resources/invalid_tests/ArgumentConstraintTest3.cnna

...test/resources/invalid_tests/ArgumentConstraintTest4.cnna

...test/resources/invalid_tests/ArgumentConstraintTest5.cnna

...test/resources/invalid_tests/ArgumentConstraintTest6.cnna

src/test/resources/invalid_tests/DuplicatedArgument.cnna

src/test/resources/invalid_tests/DuplicatedIONames.cnna

src/test/resources/invalid_tests/DuplicatedNames.cnna

src/test/resources/invalid_tests/IllegalIOName.cnna

src/test/resources/invalid_tests/IllegalName.cnna

...test/resources/invalid_tests/InvalidArrayAccessValue.cnna

src/test/resources/invalid_tests/InvalidIOShape1.cnna