2.0.0
	- DNSMessage is now monomorphic
	- RDATA is now monomorphic
	- Removed traversal instance for DNSMessage
	- EDNS0 encoding/decoding is now supported
	- Removed dnsMapWithType and dnsTraverseWithType functions
	- responseA and responseAAAA now take lists of IP addresses as their arguments
	- DNSHeader type no longer has qdCount, anCount, nsCount, and arCount fields
