DNS changer using builtin command and direct your connection to prevent dnsleak, default dns server using opendns, builtin command need root access, only default dns port 53 is supported without root access

Features:
- supported android api 15+ (ICS) to the latest version api 29+ (Q)
- auto detect using dns root/vpn services
- unofficial DNS port supported by DNS service provider and rooted device
- improve iptables/ip6tables nat table support checker
- start service without available network
- show in-app order id in about dialog
- added DNS lookup for supported devices

- updated libraries