Log Message:
Updated package to latest version, 113.24.00. Changes include:

	Switch code in lib subdir to ppx-style.
	Inline some calls that js_of_ocaml was unable to recognise as tail-recursive
	(cf. issue 14)
	Minor update: documentation.
	Added sexp_of_ support for GADTs, and remove the not-quite-working support
	for of_sexp.
	Improved the implementation of Exn.sexp_of_t, using the unique id in
	exceptions in OCaml 4.02.
	We use the identifier to map exception constructors to converters.