Version 0.4 of the SDSS extended PSFs: sent to Journal editor and arXiv Once the paper has been accepted by the journal (MNRAS; Accepted 2019 October 30. Received 2019 October 29; in original form 2019 September 10), final modifications since v0.3 have been done. They are mainly to make the final paper fully reproducible. In this sense, the source of the paper is now into this project under Git control. This version of the project is the one that is going to be sent to the arXive. Some of the important changes are: - The project needs the input dataset allocated in Zenodo (link below). Decompress this file into a directory and give the adress in the `./project configure' step when asking for "Input datasets directory". https://zenodo.org/record/3524937/files/sdss-extended-psfs-inputs.tar.gz - The project also needs the software tarballs. They are allocated in Zenodo (link below). Decompress this file into a directory and give the adress in the `./project configure' step when asking for "software tarball directory". https://zenodo.org/record/3524937/files/sdss-extended-psfs-tarballs.tar.gz