RFC2136 provider for libdns

This package implements the libdns interfaces using RFC2136 Dynamic Updates, allowing you to manage DNS records.

Example configuration

p := rfc2136.Provider{
	KeyName: "test",
	Key:     "cWnu6Ju9zOki4f7Q+da2KKGo0KOXbCf6Pej6hW3geC4=",
	KeyAlg:  "hmac-sha256",
	Server:  "1.2.3.4:53",
}