2.7.0 (2016-02-14):
* Remove sexplib.syntax, type_conv deps and camlp4 transitive dependency
* Add ppx_sexp_conv dependency
* Require OCaml 4.02.2+
* Add `Ipaddr.Prefix.subset`, `Ipaddr.V4.Prefix.subset` and `Ipaddr.V6.subset`
predicates to test containment of subnets (#52 from @seliopou)
2.6.1 (2015-02-20):
* Fix findlib requires in oasis to restore pre-4.02.1 compatibility
2.6.0 (2015-02-19):
* Change IPv6 link-local address prefix from fe80::/10 to fe80::/64. (#39)
* Remove type bytes = string alias (potentially breaking)
* Turn on -safe-string (#41)
* {V4,V6}.to_bytes_raw now uses Bytes.t rather than string (potentially breaking)
* Add multicast MAC conversions from RFC 1112 and RFC 2464
* Add to_domain_name conversions to DNS label lists (in-addr.arpa and ip6.arpa)
* Add V6.interface_routers, V6.site_routers, and V6.Prefix.solicited_node
* Add V6.link_address_of_mac to convert a MAC into a link local IP address
* Add `with sexp` (de)serializers to all of the Ipaddr and Macaddr types.
* Add `Ipaddr.V6.Prefix.of_netmask` for conversion from an IPv6
address/netmask to prefix (useful for some binary interfaces).
* Add `Ipaddr.V6.Prefix.netmask` to generate a netmask address from a
prefix (useful for some binary interfaces).
* Add `Ipaddr.Prefix.network` for generic prefix -> address conversion
* Add `Ipaddr.Prefix.netmask` for generic prefix -> netmask conversion
* Add `Ipaddr.V4.Prefix.of_netmask` for conversion from an
address/netmask to prefix
* Add `Ipaddr.V4.Prefix.netmask` to generate a netmask address from a prefix
* Add an [Ipaddr_unix] module to convert to-and-from the standard library.
* Add a toplevel pretty printer in the `ipaddr.top` package.
* Add `of_string_raw` to `Ipaddr.V4.Prefix` and `Ipaddr.V6.Prefix`
* Add `of_addr` to `Ipaddr.V4.Prefix` and `Ipaddr.V6.Prefix`
* Add type `('v4,'v6) v4v6` to `Ipaddr` to represent version disjuncts
* Add `Ipaddr.Prefix` module for generic prefix manipulation
* Change `Ipaddr.V4.make` to accept `int` rather than `int32` (breaking)
* Add IPv6 support
* Add generic IP address support
* Add type `scope` for classifying address scopes
* Add `Ipaddr.V4.of_string_raw` for parsing inside of larger strings
* Add `Ipaddr.V4.to_int16` and `Ipaddr.V4.of_int16`
* Add `unspecified`, `nodes`, and `routers` constants to `Ipaddr.V4`
* Add `Ipaddr.V4.Prefix.network_address` to put an address into a subnet
* Add `of_address_string_exn`, `of_address_string`, `to_address_string`,
`to_address_buffer` to `Ipaddr.V4.Prefix` to parse/print combined addr/prefix
* Add `multicast_org`, `multicast_admin`, `multicast_link` subnet constants to
`Ipaddr.V4.Prefix`
* Add `Ipaddr.V4.scope` to classify IPv4 addresses
* Add `Ipaddr.V4.is_global` and `Ipaddr.V4.is_multicast` predicates
* Add optional `sep:char` argument to `Macaddr.to_string`
* Remove internal use of Scanf.scanf