Update POM to current scenery version, add slf4j-simple, update Kotlin to 1.1.51 and lwjgl to 3.1.3
Update POM to current scenery version, add slf4j-simple, update Kotlin to 1.1.51 and lwjgl to 3.1.3

scenerygraphics/SciView,kephale/ThreeDViewer,kephale/ThreeDViewer,scenerygraphics/SciView