It is a Standard Term Support (STS) version and will be supported until Tiki 20.1 is released, as per the Tiki lifecyle policy
Tiki 19.x will require at least PHP 7.1 version.
- Moved from old no-longer support fork fullcalendar-resourceviews to latest and greatest official FullCalendar, and Scheduler (GPL) available via Packages -> https://sourceforge.net/p/tikiwiki/code/66298
Use case: when a Tiki instance has a combined use case of a public website and a restricted Intranet, it's nice to have
- PluginXMPP permits to embed an XMPP chatroom in a wiki page
- https://tiki.org/forumthread66854 has been addressed (commit ID?)
Mods are completely obsolete. All mods-related code has been removed from Tiki.
ViewerJS, which includes WebODF, will no longer be supported because no significant work has been done since 2015
For PDF viewing, we will start using code directly from Mozilla's PDF.js, and installable via Packages -> PDF.js viewer