Pebble release v2.2.0 features: * separate HTTP management interface/listener. * cert-status-by-serial management endpoint for checking revocation status. * probabilistic valid authorization reuse. bug-fixes: * fix missing returns in WFE error paths. * fix WFE rendering of empty contact/authz challenge arrays. * fix custom DNS resolver on Windows. misc: * update docker-compose.yml to use v2.1.0. * WFE "marshaling" typo fixes/consistency. Heartfelt thanks to @adferrand, @alexzorin, @eggsampler and @felixfontein for their contributions to this release.