Added **ZernPSF** class with methods for calculation, visualization and convolution with an image 2D PSF kernel, which should correspond to the Zernike polynomial.
0.0.12
Added this file for storing changes between package versions.
Added - Fitting using accounting of the Piston polynomial; - A few more tests of new fitting procedure; - ***functools.lru_cache*** annotation for speeding up of recursive calculation of polynomial coefficients.