Torwards EvoAl 1.0. Rewrote large parts of the original implementation. There is still many places to change and to fix. This state is at least compilable.

Renamed PartialSurrogateFunction to PartialSurrogateFunctionDefinition and SurrogateLayer to SurrogateLayerDefinition, allowing us to use the former names as implementation names in EvoAl itself. In the old version their name was identical (except for the package) leading to strange fully qualified class names.