v0.0.0

Initial release.

Earlier version numbers appear in this project's git history but were never
tagged or published, so there is no upgrade path to describe -- everything
below is simply what the package contains.

Added

• Interface discovery -- get_interfaces() reports adapter names, MACs,
  MTU and real prefix lengths on Linux, macOS/BSD and Windows, via ctypes
  bindings to getifaddrs(3) and GetAdaptersAddresses. No third-party
  dependency. Interface.is_loopback is derived from the addresses rather than
  the name, since lo, lo0 and Loopback Pseudo-Interface 1 share no
  spelling. Interface.primary_ip() picks one entry; iter_addresses() is the
  flattened per-address view.
• Types and parsing -- IPAddress/IPInterface/IPNetwork union aliases
  to annotate with, and one parse(value, type, **kwargs) entry point with
  non-raising try_parse and boolean is_valid siblings. Concrete types are
  strict about family; networks are non-strict about host bits by default.
• MACAddress -- colon/hyphen/dot/bare plus int/bytes, hashable and
  ordered, with .packed, .oui, .is_multicast, .is_local and
  case-selectable rendering. A value type exposing .packed, not a bytes
  subclass, matching how ipaddress models addresses.
• Socket helpers -- bind(), bind_error_hint(), interface_for(),
  get_source_ip(), get_free_port(), tcp_check(), wait_for_port().
• UdpEndpoint -- UDP receive reporting which interface a datagram arrived
  on via IP_PKTINFO, degrading where recvmsg does not exist.
• Routing and MTU -- get_route() (first hop, unprivileged), hop_count()
  (raw sockets or a traceroute fallback, so it works without elevation),
  discover_mtu() (measures the real path -- method="icmp" with DF-flagged
  pings, "udp" with datagrams, or "tcp" deriving from the negotiated MSS
  since TCP cannot be probed), get_pmtu() (the kernel's cached answer, usually
  None), get_tcp_mss(), and Interface.mtu. Header arithmetic is
  family-aware: IPv6 adds 20 bytes over IPv4, and assuming v4 on a v6 path
  under-reports by exactly that.
• CIDR maths and host parsing -- collapse(), subtract() (absent from
  ipaddress), and normalize_host(), which keeps "::1" an address rather
  than host "::" port 1.
• Scheme/port registry -- get_default_port(), get_default_scheme(),
  register_port().
• DNS -- resolve() returning native types (A/AAAA as ipaddress
  objects), [] on a genuine lookup failure, and ValueError for a malformed
  query rather than a silent empty result.
• ping() -- returns a PingResult with round-trip time and TTL that stays
  truthy. method="icmp"|"tcp"|"udp" reaches hosts through firewalls that drop
  echo; all three ask "is the host up?", so a TCP refusal or an ICMP
  port-unreachable counts as success. tcp_check remains the "is the service
  up?" question, where a refusal is a failure. ttl= behaves identically on every platform, because Windows ping
  exits 0 for "TTL expired in transit" and the reply address is verified
  instead of the exit code.
• Scanning -- concurrent scan_ports() / scan_hosts(), ports addressable
  by scheme name.
• Multicast -- multicast_socket(), join_group(), leave_group(),
  wrapping a setup whose failure modes are otherwise silent.
• Host, retry()/backoff_delays(), and the named networks APIPA,
  LOOPBACK_V4, LOOPBACK_V6, LINK_LOCAL_V6.

Full Changelog: https://github.com/jose-pr/netimps/commits/v0.0.0