v1.0, 05/10/2011
-Initial release
v1.1
-Improved exception handling
v1.2
-Added many new DNS record types - ANY, SPF, TXT, RP, SRV.
-Added handling of local ping for IPv4 mapped/compatible IPv6 addresses.
-Added Parsing of dig result to extract answer section/answer values and automatically copy to clipboard.
-Fixed user input validation problem and clipboard problem.
v1.3
1) User warning if app has been denied INTERNET permission.
2) Added menu option to 'prefer' ipv6 addresses over ipv4 addresses (Android API option). Default value is set to 'true'.
3) Added message for user if DNS server does not respond to queries over TCP (when response cannot fit in single UDP packet and is truncated).
4) Fixed bug with auto-completion of user input. Eliminated duplicates from auto-complete list.
