Deleted obsolete CachedRadioChannel base class.
Added const qualifiers to IModulation.
Added modulation and bit error computation to scalar radio.
Moved cache from subclass to radio channel.
Followed recent changes with parallel radio channels.
Added a new direct radio channel test.
Cosmetics.
Changed scaling test.
Changed statistical scalar test to be more flexible.
Changed end reception timers to use vector.

Profiling showed that this change increases performance significantly.
todo breaks fingerprints