[ Roger Leigh ] * New release. * sbuild: - A $purge_build_deps configuration option, and --purge-deps command-line option have been added to control build-dependency removal (Closes: #528312). - Use the isin function from the Sbuild module (Closes: #529470). Thanks to Gustavo Noronha Silva for spotting this. * Sbuild: - Use Filesys::Df (libfilesys-df-perl) in place of invoking /bin/df and parsing its output. This is more robust and efficient, and works whatever the user environment (Closes: #509133).