There is no reason to ever use anything other than the default reg_type='mba'.

Impose stronger regularization for spatial frequencies beyond the numerical aperture to prevent high-frequency artifacts in the case of deeply holographic data

The support mask for the initial guess was not padded.

frequency axis is now scaled such the first minimum of the CTF is on 1
fix #3

addPoissonNoise now correctly handles input that is not "double"

avoids shadowing MATLABs builtin function psd

fix #2