http://l3tczdiiwoo63iwxty4lhs6p7eaxop5micbn7vbliydgv63x5zrrrfyd.onion/user-manual/whatsnew.html
Note to Upgraders A quick list of things to be aware of before upgrading from earlier versions of Privoxy : The recommended way to upgrade Privoxy is to backup your old
configuration files, install the new ones, verify that Privoxy is working
correctly and finally merge back your changes using diff and maybe patch .