• Improve stdout/stderr handling in ip4tables/ip6tables/ip4tables_restore/ip6tables_restore functions
• Fixed ip4tables/ip6tables functions were broken for multiline result since 2.1.0 breaking eg. the traffic-accounting-plugin
• Cleanup log handling + rename /var/log/firewall.log to /var/log/arno-iptables-firewall + enable logrotate
• Fixed stale lock file removal didn't work properly
• Get rid of ENV_FILE/PLUGIN_CONF_PATH/PLUGIN_BIN_PATH setting in config file and improve autodetection