Added

• OTP 20 compatibility (#1430)
• Message Archive Management v0.6 support (#1442, #1471)
• Final stage of Mongoose Accumulators implementation (#1398, #1512)
• REST API: MUC Light rooms can be created with a specified username part (#1387)
• REST API: MUC Light rooms can be addressed with a bare JID (not only with their usernames) (#1417)
• REST API: MUC Light rooms can be destroyed (#1461)
• MAM can be configured to archive XEP-0333 Chat Markers (#1377)
• mod_http_upload_s3 can be configured to skip the ACL header (so MIM can integrate with Minio) (#1415)
• Administration REST API can be protected with the Basic HTTP Authentication (#1453)
• More configuration options for JWT authentication backend (#1321)
• (Un)Subscribing to many hooks with a single function call (#1376, #1426)
• New ejabberd_router:route_error_reply/4 function (#1427)
• mongoose_commands can accept lists of elements as an argument (#1465)

Changed

• Switched back to strictly monotonous MAM message IDs (#1372)
• MongooseIM will not start if the ODBC connection is configured but no ODBC pools are defined (#1455)
• SASL X-OAUTH mechanism is not advertised if mod_auth_token is not enabled (#1450)
• ejabberd_auth:authorize/1 is now used for authorisation in client REST API (#1409)
• DNS lookup is not performed for the S2S connection if the host is already defined in the configuration (#1314)

Fixed

• Fix RDMBS backoff calculation (#1394)
• URL escaping and reporting in mod_http_upload (#1391)
• Fixed Unicode support in the MAM full text search with a Riak backend (#1407)
• Authentication crash with SASL PLAIN and an invalid password (#1433)
• Random crashes in tests (#1374, #1428)
• mongooseim version command was broken (#1457)

Other

• Documentation fixes and improvements (#1373, #1380, #1382, #1385, #1396, #1399, #1402, #1408, #1416, #1418, #1434, #1441, #1445, #1451, #1456, #1468, #1469, #1472, #1475, #1477, #1480, #1482, #1483, #1484, #1485, #1486, #1487, #1488, #1489, #1490, #1492, #1493, #1494, #1495, #1496, #1498, #1499, #1501, #1502, #1503, #1504, #1506, #1507, #1508, #1532, #1534)
• First stage of mod_mam and its submodules' refactoring (#1381)
• Tests improvements and refactoring (#1383, #1388)
• Improved coverage check (#1397)
• Build system & scripts improvements (#1412, #1422, #1448)
• Code & style improvements (#1454)
• Updated dependency: cqerl (#1447)

Commits, merged PRs and closed issues

• List of merged PRs
• List of closed issues
• Repository history for this release

Special thanks to our contributors: @Beisenbek, @benkard, @deadjdona, @fblackburn1 !