CoreAstroAlgs - CASHalfFluxDiameter: corrected the distribution used for the test Gaussian exposure. The angular factor s should not be larger than 1 in magnitude. Also added a warning regarding the value of the exact HFD when s is not zero.
CoreAstroAlgs - CASHalfFluxDiameter: changed the name of method -hfdForExposureArray... to -roughHfdForExposureArray... to avoid confusion since this is not the method of choice.