Solex_ser_recon_EN version 3.5

Solar disk reconstruction from SHG (spectroheliography) video files. This version is from 13 July 2022 includes a new method for "border detect" of the spectral line that is more robust than the original method. It will now find the ends of the spectral line even if one border is on the edge of the frame (a common failure mode for the old method). Another change makes detection of the ellipse fitting routine more robust, again in the case where one end of the spectral line is at the edge of the frame.