Update gitattributes to produce slimmer packages for composer
Update gitattributes to produce slimmer packages for composer

bartbutler/htmlpurifier,r-kovalenko/htmlpurifier,stefanotorresi/htmlpurifier,r-kovalenko/htmlpurifier,ezyang/htmlpurifier,bartbutler/htmlpurifier,ezyang/htmlpurifier,stefanotorresi/htmlpurifier,Masterjoa/HTMLPurifier-standalone,Janson-Leung/htmlpurifier,Janson-Leung/htmlpurifier,Janson-Leung/htmlpurifier,stefanotorresi/htmlpurifier,stefanotorresi/htmlpurifier,Masterjoa/HTMLPurifier-standalone,bartbutler/htmlpurifier,r-kovalenko/htmlpurifier,ezyang/htmlpurifier,Janson-Leung/htmlpurifier,r-kovalenko/htmlpurifier,ezyang/htmlpurifier,bartbutler/htmlpurifier