v0.5.3

Main changes in this version:

• iptables and nftables counters are now preserved when updating ip lists, after geoip-shell version upgrade and after reboot (only preserved after reboot if the nobackup option is disabled)
• minor logic improvements in the -manage script
• more efficient backup of ip lists on iptables-based systems
• improved some console messages
• updated documentation

Full Changelog: v0.5.2...v0.5.3