Don't include heavy STL headers like <algorithm> in header files

This provides a considerable compilation time reduction and most
of these were just using std::copy/fill which can be replaced by
memcpy/memset, as all of their uses were applied to POD types

include/tins/utils.h

@@ -48,7 +48,7 @@ class NetworkInterface;
 class PacketSender;
 class PDU;
 class IPv6Address;
-template <size_t n, typename Storage>
+template <size_t n>
 class HWAddress;
 
 /**