Version 2.6.6

Fixed a bug that caused notifications to be removed immediately after being created

Version 2.6.5

* collection sync: don't save new sync state before downloading is finished
* always use multi-get, even for single vCards/iCalendars
* update dependencies (okhttp, Android framework)
* minor fixes and improvements

Version 2.6.4-ose

* calendar sync: delete exceptions from events when events are mass-deleted, to
* events/tasks: improve handling of VALARM (REL=END, VALUE=DATE-TIME)
* Webcal calendars: use UrlUtils.equals to find matching calendar
* new translation and libraries

Version 2.6.3.1

Updated libraries, including okhttp, to fix a crash when resource detection with HTTP/2 connections is cancelled by user

Version 2.6.3

* account settings: new setting "default reminder"; improved re-loading of entries when settings which have impact on parsing/processing are changed
* improved resource detection: detect address books/calendars when they are identical with their home-set
* link to privacy policy added to navigation drawer
* vCard sync: improve compatibility (for instance with Samsung "Edge panel")
* minor improvements and bug fixes

Version 2.6.2

* add new sync extra: SYNC_EXTRAS_PRIORITY_COLLECTIONS, which can be used by calendar/task apps (see in-code documentation)
* improve vCard compatibility (non-standard TYPE=OTHER is now interpreted)
* use new Material theme
* other improvements and bug fixes

Version 2.6.1.1

* generate DTSTAMP again

Version 2.6.1

* login with URL: assume https:// URI scheme if none given
* tasks
  - subtasks support
  - save/restore CATEGORIES, RELATED-TO, unknown properties
* events: better handling for EMAIL reminders

Version 2.6

* Android 10-ready
  - WiFi SSID restriction: ask for background location permission
* implement Nextcloud login flow (supported by Nextcloud Android app 3.9.0+)
* AccountList fragment: Show "Network unavailable" message if there is no Internet connection
* keep "force read only" flag when refreshing collections
* library updates

Version 2.6-beta1-ose

* Android 10-ready
  - WiFi SSID restriction: ask for background location permission
* implement Nextcloud login flow (can be called from Nextcloud app)
* AccountList fragment: Show "Network unavailable" message if there is no Internet connection (only API 21+)
* keep "force read only" flag when refreshing collections
* library updates

Version 2.5.5

* enable Autofill (password managers) for Login screen
* tasks: support CATEGORIES (although they're currently not shown in the UI of OpenTasks)
* update many libraries and dependencies, including okhttp and Conscrypt

Version 2.5.5-beta1

* enable Autofill (password managers) for Login screen
* tasks: support CATEGORIES (although they're currently not shown in the UI of OpenTasks)
* update many libraries and dependencies, including okhttp and Conscrypt

Version 2.5.4.1

* add ProGuard line to avoid AppCompat crash

Version 2.5.4

Workaround for a Meizu problem which causes DAVx⁵ UI crashes

Version 2.5.3

* re-enable HTTP/2 again (was disabled in 2.5.1 by mistake)
* create collections:
  * show display name of home sets
  * honor bind privilege: show only writeable home sets
* enable sync of created collections by default
* minor library updates

Version 2.5.2

* debug info: show details of UnknownHostExceptions instead of an empty string
* fix problems with events with VTIMEZONE with DAYLIGHT, but without STANDARD definition (events were always stored at 23:00 of previous day)
* ical4android: fix (potential) threading problem

Version 2.5.1

* Webcal subscriptions: handle webcal(s):// URLs and treat them as http(s)://
* don't use HTTP/2 with client certificates
* minor bug fixes and improvements; new translations
* show unhandled exceptions with DebugInfoActivity