Switching to the MIT license is actually the main reason to release Lwt now, so this release is a bit sparse compared to most 
There are, however, other nice additions and fixes. See the changelog below.
Lwt_io.establish_server_with_client_socket was added to help port http/af to Lwt. http/af is the fast new HTTP server by @seliopou. This should be coming out soon.
Additions
- Change license to MIT (#560).
Lwt_fmt, an Lwt-aware version ofFormat(#548, @Drup).Lwt_io.establish_server_with_client_socket(#586).Bugs fixed
Lwt_stream.iter_n: rename?max_threadsargument to?max_concurrency(#581, @hcarty).- PPX: reject
matchexpressions that have onlyexceptioncases (#597, @raphael-proust).Miscellaneous
- Improvements to
Lwt_pooldocs (#575, @bobbypriambodo).- Restore all PPX tests (#590, Jess Smith).
Thanks to all the contributors who worked on this release, and to past contributors for agreeing to the license switch!