#31 Use deterministic record ordering
#31 Break out raw data exchange in DNS source for packet grabbing
#31 Break out Request creation in DNS source
#31 Deactivated CNAME test
#31 Break record pack/unpack into distinct functions
#31 Fix CNAME input parsing (issues were in utils.str2labels)
#31 Confirm that packing works too
Close #31 : Fix inconsistency in const.get_label with aliases