Added

• SASL EXTERNAL authentication method, i.e. auth with certificates (#1735)
• Jingle/SIP proxy (#1797, #1814)
• "Hidden" components capability (#1769)
• Mongoose Services (#1792)
• Hosts Refresher process for Global Distribution (#1660)
• advertised_endpoints option for Global Distribution (#1724)
• Pluggable backends support in mod_muc (#1758)
• Foreground mode (#1775)
• Now it is possible to upload test results to Google Drive (#1702)
• Conditional logging macros (#1707)
• Extended logging in mod_push_service_mongoosepush (#1777)
• Extra debug logs in ejabberd_service and mod_websockets (#1697)
• Extended logging in mod_vcard (#1715)

Changed

• Refactored MongooseIM header files (#1570)
• mod_event_pusher and mod_event_pusher_push API has been improved; not backwards compatible (#1796)
• gen_mod:start,stop no longer allow to start already running and stop already stopped module (#1771)
• "Big tests" are moved from test.disabled/ejabberd_tests/ to big_tests (#1778)
• Binary values are now hex-escaped in queries to MySQL (#1678)
• Updated dependencies: fast_tls @ a166f0e9fe78304e5ca628fd5eff57c850241813 and cache_tab @ 1.0.12 (#1753, #1806)
• Updated MySQL library to 1.3.2 (#1787)
• Updated rebar3 to 3.5.0 (#1786)
• mod_ping no longer pings bare JIDs (#1710)
• mod_mam no longer uses dynamically compiled module for accessing parameters (#1627)
• 1-1 messages REST API now uses mongoose_acc structure (#1744)
• Improved logging in Global Distribution (#1761)

Fixed

• Under some conditions MongooseIM could enter infinite error routing loop (#1800)
• mod_mam was handling Unicode data improperly (#1748)
• mod_event_pusher_push could attempt pushing body-less message (#1726)
• mod_event_pusher's HTTP backend was escaping data improperly (#1632)
• A corner case in Global Distribution was present that could lead to broken message order (#1689)
• Global Distribution was not caching origin info for packets from components (#1695)
• Race condition was present in outgoing connection pools' initialisation in Global Distribution (#1750)
• Global Distribution mappings manager sometimes crashed when mongoose_router_external* routers were first in routing chain. (#1763)
• Admin REST API wasn't working properly with MUC Light + ODBC backend (#1742)
• mod_mam was calculating complete attribute improperly when paginating backward (#1740)
• X-OAUTH2 tokens were not deleted properly on user removal (#1746)
• MAM 0.2 is now properly deprecated (#1807)
• Received stanza size metric could be highly inaccurate (#1615)
• Tide address used http instead of https (#1701)
• MongooseIM could not be deployed in paths with spaces (#1621)

Other

• Documentation fixes and improvements (#1676, #1696, #1709, #1727)
• Tests improvements and refactoring (#1628, #1637, #1644, #1653, #1663, #1665, #1680, #1681, #1687, #1692, #1706, #1708, #1720, #1736, #1737, #1743, #1745, #1747, #1749, #1756, #1757, #1760, #1768, #1770)
• Removed unused Riak script (#1671)
• Commit messages with Unicode characters are now properly handled (#1675)

Commits, merged PRs and closed issues

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

Special thanks to our contributors: @igors @jacksgt @sstrigler @GalaxyGorilla @varnerac!