Added readout amps handling

Cleaned up setWindow to only fail if reading from more than one amp
Cleaned up exposure duration measurement (it was only measuring to
the nearest second; now it uses chrono for much finer resolution).
Renamed enum::name maps by adding the word Name.
Simplified arcticICC.i but I don't know if the changes are right.
These changes are untested.
Merge branch 'master' of github.com:r-owen/arcticICC