Next release

[hhugo]

• add documentation documentation  #447
• synchronize release with tyxml - @Drup - 4.0 Release list tyxml#99
• check compatibility with OCaml 4.03 (Implement dummy primitives for ephemerons #446)
• toplevel with ppx (Alternative interface for JsooTop. #435)

[avsm]

Just curious where this is ... it would be very useful to have a 4.03-compatible js_of_ocaml (which currently requires pinning to the master branch)

[hhugo]

I won't have time to work on this in the next few days.
We at least need to fix #446 (easy task) and #469 (patch is ready)

[bobzhang]

IIRC, js_of_ocaml is compiler independent, given a bytecode(assume the bytecode format is unchanged), it should just work, right? (assume the library does not use new things like ephermoron)

[hhugo]

The magic number has changed