better encapsulation of multidomain-sync internals
restore original authroship of lwt_ppx this has been overwritten when switching to dune-project
prepare for 6alpha01
mark versions in dune file
bump version numbers
lwt_ppx is not compatible with ppxlib.0.36+
CHANGES for 5.9.0
Update src/unix/lwt_unix.h
Prepare for release
Set version in opam file