Bump to 1.0.0
Remove the IPv4/IPv6 types from cstruct, which don't really belong here.

They are now in the `ocaml-ipaddr` library instead.
More ocamldoc improvements
More conservative bounds checking in the length manipulation functions.
sync CHANGES
more OCamldoc
More cstruct documentation
finish up the ocamldoc with a header introduction
Build C stubs with `-Wall`
Remove the OPAM 1.0 tests