Version 3.3.8

* vCard nickname and Website URL: treat TYPE value as case-insensitive
* CalDAV: don't show collections which are not calendars/task lists
  in the list
* BatchOperation: fix back references when the transaction has to be split multiple times
* debug info: include interface name and DNS servers
* minor improvements and bug fixes

Version 3.3.7

* account view: new setting "show only personal collections" (shows only collections from homesets, especially useful with for instance eGroupware)
* account view: show owner in collection properties (if available)
* allow to select client certificates for existing accounts
* save sync intervals and chech/repair them at app start and reboot
* other improvements and bug fixes

Version 3.3.6

* when an account is created, open it immediately after setup
* don't ask for active location services on Android <9 / location permissions on Android 8.0
* custom certificates: make it possible to trust different certificates with the same CN
* don't sync Webcal-only calendars/tasks lists over CalDAV (may cause duplicate calendars)
* better Android 11 compatibility
* minor improvements and bug fixes

Version 3.3.5

* work around timezone problem of libical-based servers (see https://forums.bitfire.at/post/13518)
* account setup: open account immediately after setup
* account settings: make password a password field
* don't require location permissions for SSID access on Android <8
* add ICSx5 to visible packages so that it can be detected under Android 11

Version 3.3.4.1

Sync algorithm: when uploading a locally modified resource results in 404/410, try as fresh upload again

Version 3.3.4

* add Advanced Login that supports
  - authentication with username/password and/or
  - client certificates;
  - or anonymous login
* fix "Empty values" exception when synchronizing changed contacts in vCard4-style groups

Version 3.3.3

* support for Android 11
  - ask for permission to keep permissions in Permissions fragment
  - handle background location permission for WiFi SSID restriction as required for Android 11
  - declare requirements for package visibility
* login over Nextcloud app: use Login Flow v2 and Custom Tabs to support WebAuthn; so for instance 2FA with Yubikey is now supported
* minor improvements, bug fixes (including a big where OpenTasks was not shown in the permissions fragment when tasks.org was not installed), translation updates

Version 3.3.2

* support for tasks synchronization with Tasks app (tasks.org) [not all fields, see https://tasks.org/docs/sync.html]
* minor improvements, bug fixes, translations

Version 3.3.1

* fix for Google Contacts / Android 11: export address book authenticator so that address books are shown in Google Contacts again

Version 3.3

* accounts overview: show sync/refresh status of every account with a progress bar
* accounts overview: new *Sync all accounts* action
* launcher shortcut: *Sync all accounts* (available as DAVx⁵ has been started the first time); can be used as widget
* new debug info/share logs screen
  * improved UI (including specific messages for common errors)
  * improved debug info (more information, better readability)
  * *Share* action now generates a ZIP file with debug info (and logs, if available)

Version 3.2.1.4

* fix sync interval sometimes not updated in UI after changing it
* fix isSyncable=-1 in some cases
* don't grey out WiFi SSID setting when data saver is active
* WebDAV: don't follow redirects from HTTPS to HTTP
* CardDAV: don't keep SORT-STRING as unknown property
* CalDAV tasks: fix rewriting of DTSTART/DUE when one of them is a date and the other a date-time