update changes and bump to 2.4.0

CHANGES

@@ -1,3 +1,25 @@
+2.4.0 (2017-03-30):
+
+Distribute the PPX extension so that it is compatible with Jbuilder.
+`ppx_cstruct` is now distributed as both a library and a binary.
+Findlib predicates are used to distinguish usage:
+ - the binary is used for toplevel and simple -ppx building
+ - the library is used for linking custom rewriters
+ - `-package cstruct.ppx` alone uses the binary for rewriting.
+ - `-package cstruct.ppx` -predicates custom_ppx,ppx_driver" is used to link the rewriter.
+
+To use the PPX extension in jbuilder, just add:
+
+```
+  (libraries (cstruct))
+  (preprocess (pps (cstruct.ppx)))
+```
+
+to your `jbuild` file.  This may be renamed to `ppx_cstruct` in a
+future release so that the PPX dependency is decoupled from the main
+library, so this `cstruct.ppx` is intended to be transitional as it
+is what was originally used.
+
 2.3.3 (2017-03-28):
 * Port ppx extension to use `ocaml-migrate-parsetree` so it should
   also compile on future revisions of OCaml (#127 via @let-def).

_oasis

@@ -1,6 +1,6 @@
 OASISFormat:  0.4
 Name:         cstruct
-Version:      2.3.3
+Version:      2.4.0
 Synopsis:     Manipulate external buffers as C-like structs
 Authors:      Anil Madhavapeddy, Richard Mortier, Thomas Gazagnaire,
               Pierre Chambart, David Kaloper, Jeremy Yallop, Hannes Mehnert,

lib/META

@@ -1,6 +1,6 @@
 # OASIS_START
-# DO NOT EDIT (digest: 13bd1c0f803ec1e9d184ece54994027a)
-version = "2.3.3"
+# DO NOT EDIT (digest: fb431389e9ab426f0ae3345e52406fa7)
+version = "2.4.0"
 description = "Manipulate external buffers as C-like structs"
 requires = "bytes bigarray ocplib-endian ocplib-endian.bigstring sexplib"
 archive(byte) = "cstruct.cma"
@@ -9,7 +9,7 @@ archive(native) = "cstruct.cmxa"
 archive(native, plugin) = "cstruct.cmxs"
 exists_if = "cstruct.cma"
 package "unix" (
- version = "2.3.3"
+ version = "2.4.0"
  description = "Manipulate external buffers as C-like structs"
  requires = "cstruct unix"
  archive(byte) = "unix_cstruct.cma"
@@ -20,7 +20,7 @@ package "unix" (
 )
 
 package "lwt" (
- version = "2.3.3"
+ version = "2.4.0"
  description = "Manipulate external buffers as C-like structs"
  requires = "cstruct lwt.unix"
  archive(byte) = "lwt_cstruct.cma"
@@ -31,7 +31,7 @@ package "lwt" (
 )
 
 package "ignore" (
- version = "2.3.3"
+ version = "2.4.0"
  description = "Manipulate external buffers as C-like structs"
  requires =
  "ocaml-migrate-parsetree ppx_tools_versioned.metaquot_404 bigarray"
@@ -41,7 +41,7 @@ package "ignore" (
 )
 
 package "async" (
- version = "2.3.3"
+ version = "2.4.0"
  description = "Manipulate external buffers as C-like structs"
  requires = "cstruct async threads"
  archive(byte) = "async_cstruct.cma"

setup.ml

@@ -1,7 +1,7 @@
 (* setup.ml generated for the first time by OASIS v0.4.6 *)
 
 (* OASIS_START *)
-(* DO NOT EDIT (digest: 2363fe385f4cc086b896352e8f3d33a7) *)
+(* DO NOT EDIT (digest: e0a918cce02a869738a00d4ca261e101) *)
 (*
    Regenerated by OASIS v0.4.8
    Visit http://oasis.forge.ocamlcore.org for more information and
@@ -7163,7 +7163,7 @@ let setup_t =
        {
           oasis_version = "0.4";
           ocaml_version = Some (OASISVersion.VGreaterEqual "4.01");
-          version = "2.3.3";
+          version = "2.4.0";
           license =
             OASISLicense.DEP5License
               (OASISLicense.DEP5Unit
@@ -9128,15 +9128,16 @@ let setup_t =
        };
      oasis_fn = Some "_oasis";
      oasis_version = "0.4.8";
-     oasis_digest = Some "2\218MZ\238\205\030\133(MLI\022\143]h";
+     oasis_digest =
+       Some "C\141\186\204\158y%\140R\163\222\223\204\164\178\237";
      oasis_exec = None;
      oasis_setup_args = [];
      setup_update = false
   };;
 
 let setup () = BaseSetup.setup setup_t;;
 
-# 9140 "setup.ml"
+# 9141 "setup.ml"
 let setup_t = BaseCompat.Compat_0_4.adapt_setup_t setup_t
 open BaseCompat.Compat_0_4
 (* OASIS_STOP *)