From upstream's changelog:
>From the Release Notes
(https://wiki.davical.org/index.php/Release_Notes/1.1.6):
Bug Fixes
=========
* Only one set of angle brackets around cannot-modify-protected-property error tag (#112)
* Fix sync of deleted events when hide_todo is set (#100)
* Modify hide_older_than logic to allow through recurring events (#103)
* Fix modified mapping in the LDAP driver (#108)
* Do not output unescaped XML special characters in if-match error message (#113)
* Don't crash on principal-property-search REPORT without a proper match clause (#114)
* Various CardDAV and CalDAV fixes highlighted by caldav-tester
* Fix $SERVER variable names used when operating behind a proxy (!38)
* Use modern class constructors that even work with PHP7 (fixes: #119)
* Card search invalid when negate-condition="no" (#126)
* Propagate database error to client (#127)
* Add a log entry for login failures (#105)
Other Changes
=============
* Updates to the test suites, which are mostly passing now
* Improved logging in certain error conditions
* Set $c->external_ua_string to fetch external calendars posing as a certain user-agent (#115)
* Improve parsing of RFC5545 durations
* Improve support for /principals/users/..., /principals/resources/...
and /__uids__/... URLs
* Improve use of create-database.sh and update-davical-database with non-default values (see #124)
* Experimental $c->enable_attendee_group_resolution will resolve
attendee group names to a list of individual users (from !21)
* Add support for calendar-user-type (!39)
* Update caldav_functions.sql for Postgresql 10 (#129)
Database Upgrade
================
* Run dba/upgrade-davical-database to get Postgresql-10-compatible functions
Upgrades of Other Software
==========================
* AWL 0.58 is required for best PHP7 compatibility
0.9.9.6:
Functionality Enhancements
Implementation of the Timezone Service Protocol (draft)
Bug Fixes
Fixes to the handling of time-range queries in the calendar-query report.
Fixes to LDAP authentication regressions introduced in 0.9.9.5.
Fix ability to save blank default privileges.
Other Changes
Add a script which can be run from cron to sync users from LDAP.
Most use of the deprecated iCalendar class has been switched to use the new vCalendar class.
0.9.9.5:
Functionality Enhancements
Experimental 'memcached' support is added to help large sites improve scalability.
The /setup.php URL is improved to provide better information
When a new user is created an 'addressbook' collection will be created in addition to their 'home' calendar.
Scheduling Extensions for CalDAV: When a meeting is scheduled with another person on the same server it should automatically appear in their calendar and scheduling inbox.
Implemented the principal-match REPORT.
Only include calendar-data (or addressbook-data) in the response to a sync-collection if there are fewer than 50 changes outstanding.
Add support for Digest authentication.
Add support for using IMAP as an auth source.
Add support for binding remote calendars External Bind(Rob Ostensen).
Bug Fixes
Repeat rule expansion now handles floating date-time and date correctly.
Access to calendar resources by users with only read-free-busy access should always be obfuscated.
The first user to log in after setting up a system using pam_auth or LDAP will no longer fail.
Correct handling for PUT of a VCALENDAR with unreferenced VTIMEZONE components.
Only include override components in an expanded report if they override in the expand period (or otherwise affect within the period).
Correct output of XML <error> responses containing error tags in the DAV namespace.
Correct handling of calendar-query REPORT where <prop> follows <filter>
Setup tests now handle where PHP config values are set to '0' or 'off' as equivalent.
Various bugfixes to caldav-client-v2.php script.
Don't restrict password character set for LDAP auth users.
Don't allow BIND to succeed with an empty password.
Correct sort ordering of members of a group.
Block access by expired tickets.
Other Changes
Group membership now always confers the group's 'Default privileges' to members of the group.
The handling of reading users from the database is refactored from old PHP4 code into some better object oriented classes.
Refactoring of the handling of PUT requests.
Add a workaround to let Apple Addressbook log in and use CardDAV even when account names contain '@'
Updated translations.
New translations for Norwegian, Brazilian Portuguese and Mexican Spanish.
Allow expansion to return expanded floating time events in floating time (extension to spec).
When an event is added but has no UID (invalid) we now add one.
Add support in the archive for building RPMs of DAViCal
2010-12-28 Andrew McMillan <andrew@morphoss.com>
* Release 0.9.9.4
2010-12-27 Andrew McMillan <andrew@morphoss.com>
* Refactor PUT functions to set modified/created dates more correctly.
2010-12-27 Leho Kraav <leho@kraav.com>
* add et_EE to support locales
2010-12-26 Andrew McMillan <andrew@morphoss.com>
* Fix errors in po files pointed out by Transifex uploading.
* A new AtomFeed class for building an Atom feed.
* Switch to creating an atom feed, which is a better feed standard.
2010-12-26 Leho Kraav <leho@kraav.com>
* A new URL to provide an RSS feed of a calendar's changes.
2010-12-26 Andrew McMillan <andrew@morphoss.com>
* Refactored RRule to add support for initialisation from a vProperty.
2010-12-25 Andrew McMillan <andrew@morphoss.com>
* Remove all reference to PgQuery
* Extensive refactoring of principal-edit, plus support for creating tickets.
* Add support for writing scheduling resources on PUT.
* Improve support for handling floating time.
* Add cil for internal issue tracking.
2010-12-08 Andrew McMillan <andrew@morphoss.com>
* Cut access with invalid/expired tickets out immediately.
2010-12-07 Andrew McMillan <andrew@morphoss.com>
* Handle empty PROPFIND, don't blow up on invalid XML.
2010-11-30 Andrew McMillan <andrew@morphoss.com>
* /.well-known/* now returns a 301 redirect, per spec.
* Use text/vcard for content type in advance of ratification of spec.
* Properly handle addressbooks in multiget.
* Hide authorization headers in logging.
* Update sync-collection REPORT to match -04 of draft.
* Replace index.php with caldav.php when we find it in our path.
2010-11-27 Andrew McMillan <andrew@morphoss.com>
* Be pedantic about checking user is active before we let them in.
* Specify the SRV record examples with leading _ as they should be.
2010-11-21 Andrew McMillan <andrew@morphoss.com>
* Fix SQL for group handling from Michael Braun.
* Add principal-collection-set to standard responses for DAVResource.
* Correct typo in POST handling.
2010-11-20 Andrew McMillan <andrew@morphoss.com>
* Also update displayname if fullname is changed.
2010-10-02 Daniel Aleksandersen <daniel@>
* remove old screenshots
* updated iPhone client configuration with new screenshots
2010-11-19 Andrew McMillan <andrew@morphoss.com>
* Handle stuff like DTSTART;TZID=America/New_York:20101119T231307
2010-11-14 Andrew McMillan <andrew@morphoss.com>
* Script to refresh calendar_alarms with next instance time.
2010-11-09 Andrew McMillan <andrew@morphoss.com>
* Don't let auth functions create duplicate home calendars.
2010-11-06 Andrew McMillan <andrew@morphoss.com>
* Patch for caldav sync from Pierre-Arnaud Poudret.
* Add ACL to the supported methods.
* Change regression runner to look for sample data with tests.
* Correct version number typo.
* Always grant 'DAV::read' privilege from principal to group members.
2010-11-05 Andrew McMillan <andrew@morphoss.com>
* Use expanded time specifiers in format since %Y doesn't work on Windows.
* Support recursive REPORT query if configured to allow it.
2010-11-04 Andrew McMillan <andrew@morphoss.com>
* Add a new WritableCollection object which we will use for PUT.
* Use text/vcard rather than older text/x-vcard.
* Support event properties in changed part of sync-response.
* Rename variable to work around Pg 9.0 reserved name.
2010-11-01 Andrew McMillan <andrew@morphoss.com>
* Switch from regular expression which may not work in old/odd PHP.
2010-10-31 Andrew McMillan <andrew@morphoss.com>
* Support getlastmodified property in REPORT requests.
2010-10-16 Andrew McMillan <andrew@morphoss.com>
* Fix typo in iTIP CANCEL handling.
2010-10-15 Andrew McMillan <andrew@morphoss.com>
* Turn on calendar-auto-schedule header if $c->enable_auto_schedule
* Add various additional checks into /setup.php
* Add knowledge of desired parallel AWL version to setup.
2010-10-10 Andrew McMillan <andrew@morphoss.com>
* Fix various minor CardDAV bugs.
* Omit the <response> for event outside the time range - when expanded.
* Fix privilege_to_bits function to set 'all' correctly & work with recent postgres
2010-10-08 Andrew McMillan <andrew@morphoss.com>
* Don't supply freebusy for 0-duration events.
* Another regression test for free/busy catching many events.
* Add an event with a thoroughly bogus tzid to ensure we cope.
* Check for some supported stuff very early so we can show it is missing.
* Better display of bindings.
* Add postgreSQL 9.0 as a possibility.
* Fix warning when using basic authentication fallback.
* Fix handling of iCalendar durations containing negative elements.
* Handle events which don't have either DTEND *or* DURATION.
* Rewrite __construct() method of RepeatRuleDateTimeZone to be more robust.
DAViCal is a server for calendar sharing. It is an implementation of the
CalDAV protocol which is designed for storing calendaring resources (in
iCalendar format) on a remote shared server.
DAViCal supports basic delegation of read/write access among calendar users,
multiple users (or clients) reading and writing the same calendar entries over
time, and scheduling of meetings with free/busy time displayed.
An increasing number of calendar clients support the maintenance of shared
remote calendars through CalDAV, including Evolution, Mulberry, Chandler,
Mozilla Calendar (Sunbird/Lightning), and various other closed-source
products such as Apple's iCal and iPhone.
