Lwt 5.8.0, Lwt_ppx 5.8.0

Note: To simplify the release process, Lwt_ppx versions now matches that of Lwt.

Improvements

• Make Lwt_seq.of_list lazier, make Lwt_set.to_list tail-rec. (Samer Abdallah, #1019)
• Convert more Lwt.fail into raise to increase availibility of backtraces. (#1008)

Documentation

• Small fixes. (Nils André, #1001, #1006)
• Convert manual to mld. (#951, Antonin Décimo)

Other

• Many improbements to the CI. (Sora Morimoto, Idir Lankri, #986, #1009, #1011, #1013, #1014, #1016, #1020, #1021, #1023, #1024, #1025)
• Improbements to the packaging. (Sora Morimoto, #1010, #1015)
• Make C code pass the stricter checks of GCC 14. (Jerry James, #1004)
• Fix many many C warnings and other fixes. (Antonin Décimo, #1007, #1022)