* core: batch send profile update * redundant * reorder * remove type * createSndMessages * refactor * batched create internal item * create feature items for multiple contacts * comments * refactor call site * synonim * refactor createSndMessages * more batching * remove partitionWith * unite filter and fold * refactor * refactor * refactor * fix merge * add test * rename * refactor * refactor * withExceptT * refactor * refactor2 * remove notChanged * deliver with sendMessagesB (#3646) * deliver with sendMessagesB * refactor --------- Co-authored-by: Evgeny Poberezkin <2769109+epoberezkin@users.noreply.github.com> --------- Co-authored-by: Evgeny Poberezkin <2769109+epoberezkin@users.noreply.github.com> Co-authored-by: Alexander Bondarenko <486682+dpwiz@users.noreply.github.com>