Merge main into release/v2.19.4

Brings #248 (EXDATE moves with the series when its times change) onto the
release branch, alongside the translations and dependency updates that landed on
main.

#245 and #248 both grew EventWriteMapper's EXDATE handling in the same place,
which conflicted. They are independent — #245 added exdateContains for the
detach path, #248 added shiftedExdate/exdateAfter for re-anchoring — so both
sides are kept, and their tests with them.

CHANGELOG.md

@@ -8,6 +8,16 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ## [Unreleased]
 
 ### Fixed
+- **A deleted occurrence no longer comes back when the series is re-timed.**
+  Delete a single occurrence of a repeating event, then change the time of the
+  whole series, and the occurrence you had removed reappeared. Doing it the
+  other way round — "This and all following events" — lost every removal in the
+  part of the series being changed. Removals now travel with the event: they
+  keep their place in the series across a time change, a move to a different
+  day, a timezone change and a switch to or from an all-day event, and they
+  carry over when a series is split. Repeating events on your device's own
+  calendars are affected, including the birthday and anniversary calendars
+  Calendula creates from your contacts ([#248]).
 - **Home-screen widgets now turn the page at midnight.** Both the month and the
   agenda widget kept highlighting yesterday as "today" — and the agenda kept
   greying out the wrong events as already past — until you paged the month back
@@ -1522,3 +1532,4 @@ automatically, with zero telemetry and no internet permission.
 [#225]: https://codeberg.org/jlmakiola/calendula/issues/225
 [#228]: https://codeberg.org/jlmakiola/calendula/issues/228
 [#234]: https://codeberg.org/jlmakiola/calendula/issues/234
+[#248]: https://codeberg.org/jlmakiola/calendula/issues/248