Merge branch 'radio' into 'master'

corsika/detail/modules/TimeCut.inl

corsika/detail/modules/proposal/ContinuousProcess.inl

corsika/detail/modules/radio/CoREAS.inl

corsika/detail/modules/radio/RadioProcess.inl

corsika/detail/modules/radio/ZHS.inl

corsika/detail/modules/radio/antennas/Antenna.inl

corsika/detail/modules/radio/antennas/TimeDomainAntenna.inl

corsika/detail/modules/radio/detectors/AntennaCollection.inl

corsika/detail/modules/radio/propagators/RadioPropagator.inl

corsika/detail/modules/radio/propagators/SignalPath.inl

...ika/detail/modules/radio/propagators/SimplePropagator.inl

...a/detail/modules/radio/propagators/StraightPropagator.inl

corsika/framework/core/PhysicalConstants.hpp

corsika/framework/core/PhysicalGeometry.hpp

corsika/framework/core/PhysicalUnits.hpp

corsika/modules/TimeCut.hpp

corsika/modules/radio/CoREAS.hpp

corsika/modules/radio/RadioProcess.hpp

corsika/modules/radio/ZHS.hpp

corsika/modules/radio/antennas/Antenna.hpp