• Added IpInterface::equals() method for comparing two IP addresses.
• Added getCommonCidr(IpInterface $ip): int for determining how in range two
  IP addresses are according to their common CIDR value.
• Added isBenchmarking(), isDocumentation(), and isPublicUse() type
  methods for both IPv4 and IPv6 addresses.
• Added isBroadcast(), isShared(), and isFutureReserved() type methods for
  IPv4 addresses.
• Added getMulticastScope(), isUniqueLocal(), isUnicast(), and
  isUnicastGlobal() type methods for IPv6 addresses.
• Added Ipv6::fromEmbedded() factory method to create an instance of an
  IPv4-embedded address as IPv6 instead of Multi.
• Made internal helper methods for dealing with binary data into utility
  classes: Darsyn\IP\Util\Binary and Darsyn\IP\Util\MbString.
• Complete documentation overhaul
• Increase test coverage.
• Started using static analysis both locally and via GitHub actions.
• Documentation and tests are excluded from the Git archive to reduce download
  size when installing Composer dependency as dist.
• Updated Code of Conduct to Contributor Covenant v2.1