CHANGES:

• cohttp: update HTTP codes (@emillon #711)
• cohttp: add Uti.t to uri scheme (@brendanlong #707)
• cohttp: fix chunked encoding of empty body (@mefyl #715)
• cohttp-async: fix body not being uploaded with unchunked Async.Pipe (@mefyl #706)
• cohttp-{async, lwt}: fix suprising behaviours of Body.is_empty (@anuragsoni #714 #712 #713)
• port to conduit 3.0.0: minor breaking changes on the server API, an explicit distinction between cohttp-lwt-unix (using tls), cohttp-lwt-notls and cohttp-lwt-ssl (using lwt_ssl), and includes ssl in cohttp-async (@dinosaure #692)
• cohttp-lwt-jsoo: rename Cohttp_lwt_xhr to Cohttp_lwt_jsoo for consistency (@mseri #717)
• refactoring of tests (@mseri #709, @dinosaure #692)
• update documentation (@dinosaure #716, @mseri #720)
• cohttp: fix transfer-encoding ordering in headers (@mseri #721)
• lower-level support for long-running cohttp-async connections (@brendanlong #704)
• fix deadlock in logging (@dinosaure #722)
• add of_form and to_form functions to body (@seliopou #440, @mseri #723)
• cohttp-lwt: partly inline read_response, fix body stream leak (@madroach @dinosaure #696)
• improve media type parsing (@seliopou #542, @dinosaure #725)
• add comparison functions for Request.t and Response.t via ppx_compare (@msaffer-js @dinosaure #686)