Update to V2.8.0 (this time complete): FLIR data can now be downloaded, port accepts now strings and numbers

update to V2.5.3, add the version number, bug fixes and imporved exception handling for downloadversionIRdata

bug fixes for AEF41 in the bad Pixel correction, bug fixes because of changes in json files downloaded from the Archive

improved bad pixel correction, added reading of bad_pixel file; added output control (verbose level); apply_calib_on_raw now checks for inf in gain and offset;small bugfixes