Create RELEASE_CHANGELOG.md

Author: VillePihlava

digitransit/RELEASE_CHANGELOG.md

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+# Digitransit OTP Release Summary
+
+## Changelog _20251209_ vs _upstream/dev-2.x_
+
+### Added PRs
+- Add support for the snow and ice NeTEx transport mode [#7114](https://github.com/opentripplanner/OpenTripPlanner/pull/7114)
+- Improve GTFS-RT backwards earliness propagation when update starts with `NO_DATA` [#7106](https://github.com/opentripplanner/OpenTripPlanner/pull/7106)
+-   Add native scooter preference parameters to TransModel GraphQL API [#7035](https://github.com/opentripplanner/OpenTripPlanner/pull/7035)
+- Normalize ServiceJourney/DatedServiceJourney ID prefixes in SIRI updates [#7128](https://github.com/opentripplanner/OpenTripPlanner/pull/7128)
+- Add information about the use of elevators, escalators, and stairs to queries with steps in the GTFS GraphQL API [#6897](https://github.com/opentripplanner/OpenTripPlanner/pull/6897)
+- Support gml:LineString format with list of gml:pos elements [#7135](https://github.com/opentripplanner/OpenTripPlanner/pull/7135)
+- Add Entur specific link on Emission type in transmodel API [#7148](https://github.com/opentripplanner/OpenTripPlanner/pull/7148)
+- Simplify handling of safety values [#6767](https://github.com/opentripplanner/OpenTripPlanner/pull/6767)
+- Change elevator cost calculation, add `reluctance` for elevators, and deprecate `elevatorHopCost` [#7111](https://github.com/opentripplanner/OpenTripPlanner/pull/7111)
+- Fix elevator ways with multiple intersection nodes [#7181](https://github.com/opentripplanner/OpenTripPlanner/pull/7181)
+- Improve indoor routing information in debug UI [#7174](https://github.com/opentripplanner/OpenTripPlanner/pull/7174)
+- Clear timetables after withdrawn NEW trips [#6280](https://github.com/opentripplanner/OpenTripPlanner/pull/6280)
+- Undeprecate car/bikepark nearest filters which were deprecated by accident [#7209](https://github.com/opentripplanner/OpenTripPlanner/pull/7209)
+- Fix SIRI-SX affects resolver [#7210](https://github.com/opentripplanner/OpenTripPlanner/pull/7210)
+- Add support for via-location visits in Raptor access and egress paths [#7101](https://github.com/opentripplanner/OpenTripPlanner/pull/7101)
+- Fix car routing using stations or multi-modal stations as locations [#7151](https://github.com/opentripplanner/OpenTripPlanner/pull/7151)
+- Add modes filter and totalCount to the canceled trips query in the GTFS API [#7200](https://github.com/opentripplanner/OpenTripPlanner/pull/7200)
+- Make sure flex transfers are indexed exactly once [#7218](https://github.com/opentripplanner/OpenTripPlanner/pull/7218)
+- Fix SIRI ET ExtraJourney trips not appearing in departure/arrival boards [#7052](https://github.com/opentripplanner/OpenTripPlanner/pull/7052)
+- Add `CarRequest` to cache key in `RaptorRequestTransferCache` [#7194](https://github.com/opentripplanner/OpenTripPlanner/pull/7194)
+- Add booking time parameter to the GTFS API [#7221](https://github.com/opentripplanner/OpenTripPlanner/pull/7221)
+- Add HTTP response time metric [#7133](https://github.com/opentripplanner/OpenTripPlanner/pull/7133)
+- Add second criteria to the Raptor heuristics [#7165](https://github.com/opentripplanner/OpenTripPlanner/pull/7165)
+- Add Route/Trip/TripOnServiceDate replacement to query apis [#7126](https://github.com/opentripplanner/OpenTripPlanner/pull/7126)
+- Make filters for the canceled trips query in the GTFS API a list [#7235](https://github.com/opentripplanner/OpenTripPlanner/pull/7235)
+- Allow setting `maxThreads` lower than `MIN_THREADS` when using parameter [#7224](https://github.com/opentripplanner/OpenTripPlanner/pull/7224)
+- Allow missing arrival time on the first stop in a GTFS RT Trip Update [#7245](https://github.com/opentripplanner/OpenTripPlanner/pull/7245)
+- Direct transit search [#7145](https://github.com/opentripplanner/OpenTripPlanner/pull/7145)
+- Add ability to start a Raptor search from on-board a trip in MC range raptor [#7241](https://github.com/opentripplanner/OpenTripPlanner/pull/7241)
+- Change `@timingData` annotations in GTFS GraphQL API [#7261](https://github.com/opentripplanner/OpenTripPlanner/pull/7261)
+- Account for DST and multi-day trips in departure boards [#7250](https://github.com/opentripplanner/OpenTripPlanner/pull/7250)
+- Add publiccode.yml for OpenTripPlanner [#7212](https://github.com/opentripplanner/OpenTripPlanner/pull/7212)
+- Expose boolean extraCall field on EstimatedCall in Transmodel API [#7272](https://github.com/opentripplanner/OpenTripPlanner/pull/7272)
+- Fix mapping of `banned.trip` in GTFS API [#7288](https://github.com/opentripplanner/OpenTripPlanner/pull/7288)
+- Add trip's `carsAllowed` property to GTFS GraphQL API [#7282](https://github.com/opentripplanner/OpenTripPlanner/pull/7282)
+- Use only the closest vertices for each mode when linking with multiple street modes to improve performance [#7309](https://github.com/opentripplanner/OpenTripPlanner/pull/7309)
+- Accept integer values in Transmodel Cost scalar [#7315](https://github.com/opentripplanner/OpenTripPlanner/pull/7315)
+- Fix transport mode filter not applied on multi-mode patterns [#7275](https://github.com/opentripplanner/OpenTripPlanner/pull/7275)
+- Support for Siri ArrivalStatus.ARRIVED on EstimatedCalls [#7299](https://github.com/opentripplanner/OpenTripPlanner/pull/7299)
+- Fix memory leak in `TimetableSnapshot` related to `patternsForStop` and `realTimeAddedReplacedByTripOnServiceDateById` [#7253](https://github.com/opentripplanner/OpenTripPlanner/pull/7253)