UVES_popler: Version 0.71 release

This is version 0.71 of UVES_popler and the first GitHub "release" version which is tagged with a Digital Object Identifier (DOI) via Zenodo. Please use this DOI to cite this software in journal articles. For example, cite it as "Murphy M. T., 2016, Sdss_qsosel_bernet: First release. doi:10.5281/zenodo.[INSET 5-DIGIT DOI SUFFIX HERE]. Install UVES_popler using GitHub via https://github.com/MTMurphy77/UVES_popler For instructions on running UVES_popler, see http://astronomy.swin.edu.au/~mmurphy/UVES_pople