fix: format char used to print uintptr_t
new: mac type for Ethernet addresses

  Also, immediate values for IP replaces make-ip
new: implement timeout edge parameter for nettrack
new: support 'older' keyword in edge definitions
fix: add missing operations (hash function on macs, = alias for ==...
chg: separate nettrack graphs from each other

  So that, for instance, a grab in one does not prevent matching an edge
  on another.
new: Actually disable matching on a stopped nettrack graph
fix: nettrack edge matching according to age
new: min/max nettrack function for uints
Merge remote-tracking branch 'rixed/more-on-nettrack-timeouts'
new: Better CLI help

  Command line options requiring a parameter are now distinguished from
  mere flags by displaying a word indicating the expected datatype after
  the --option.

  For instance, "--config file : read the given file" instead of
  "--config : read the given file".
new: Allow nettrack edges to match on full parse instead of per protocol

  After each layer of protocol parse, the corresponding nettrack
  matching function is tried. This is good when your nettrack graph
  tracks events. But if you are interrested in packets it's problematic
  that each packet will trigger many different matches (for instance,
  one for Eth then one for TCP...) and one would like to be able to wait
  for the full parse of each packet before trying the nettrack match
  functions, ie subscribe to per-packet callback instead of per-protocol
  callback.

  This is now possible with the (on full-parse) edge modifier.
  In the above example you'd want to add it both to Eth and TCP metches.
fix: set expected-type when reading a IP/MAC immediate value
new: a hash function for IP type
Merge branch 'nettrack/allow-trigger-on-full-parse'
fix: missing test file in DIST files
new: A test for ICMP protocol unreachable
chg: Support for extracting IP header from unreachable-protocol ICMP errs.

  Apparently only the IP headers are embodied in this ICMP error message.
  The previous code was checking for the presence of IP header + 8 bytes.
new: Another test for another ICMP error (this time with ports)
Merge branch 'bugs/icmp-proto-unreachable'