Skybox!!!
Thicker platform
Wagons from the Train class are added to a list for easy accessibility. And TrainCrane can now put containers on the train.
Truckcranes can now move a container from an Agv to a lorry.
Merge pull request #87 from jeroen940/Skybox

Skybox!!!
Merge pull request #88 from jeroen940/TrainAndLorryCranes

Train and lorry cranes can now put a container on the lorry/train