Allows to copy dns.name.Name objects
In LOC, deal with 0 values for size, horizontal precision, and vertical precision.
Merge pull request #57 from bastiak/master

Allows to copy dns.name.Name objects
Responses to messages signed with TSIG were broken.
Do not put back an unescaped token.
add options rotate handling

for resolv.conf "options rotate" line, enable shuffling of nameservers
before each query. (should just rotate start position and maintain order?).