Changes from 5.15.1:
- Guidance
- ADDED #4676: Support for maneuver override relation, allowing data-driven overrides for turn-by-turn instructions [#4676](https://github.com/Project-OSRM/osrm-backend/pull/4676)
- CHANGED #4830: Announce reference change if names are empty
- CHANGED #4835: MAXIMAL_ALLOWED_SEPARATION_WIDTH increased to 12 meters
- Profile:
- FIXED: `highway=service` will now be used for restricted access, `access=private` is still disabled for snapping.
- ADDED #4775: Exposes more information to the turn function, now being able to set turn weights with highway and access information of the turn as well as other roads at the intersection [#4775](https://github.com/Project-OSRM/osrm-backend/issues/4775)
- FIXED: #4763: Add support for non-numerical units in car profile for maxheight [#4763](https://github.com/Project-OSRM/osrm-backend/issues/4763)