EM Cocktail: json files + Exodus (#15)
* Adding GeneratorSpectator: generator for spectator protons (#9)
* Adding a test macro for GeneratorSpectators
* Set pmax in def. constructor to avoid infinite loop in generation + small fixes
* add GeneratorParamEMlib for LMee simulations (methods from AliGenEMlib) (#10)
* Use VMC standalone if found
* account for VMC standalone
* implemented .json file format for parametrization files
* added Exodus decayer
* bugfix Exodus, updated use of PythiaDecayerConfig in GeneratorParam
---------
Co-authored-by: Chiara <[email protected]>
Co-authored-by: ffionda <[email protected]>
Co-authored-by: Benedikt Volkel <[email protected]>