Changes from 5.5
- Bugfixes
  - Fix #3475 removed an invalid exit field from the arrive maneuver
  - Fix #3515 adjusted number of nodes in annotation
  - Fix #3605 Fixed a bug that could lead to turns at the end of the road to be suppressed
  - Fix #2844 handle up to 16777215 code units in OSM names
- Infrastructure
  - Support building rpm packages.
- Guidance
  - No longer emitting turns on ferries, if a ferry should use multiple docking locations
- Profiles
  - Removed the ./profile.lua -> ./profiles/car.lua symlink. Use specific profiles from the profiles directory.
  - properties object has a new weight_name field, default value is "duration"
  - properties object has a new weight_precision field that specifies a decimal precision of edge weights, default value 1
  - In way_function the filed forward_rate and backward_rate of ExtractionWay can now be set. They have the same interpretation for the way weight as forward_speed and backward_speed for the edge duration. The unit of rate is meters per weight unit, so higher values will be prefered during routing.
  - turn_function now does not return an integer but takes in a ExtractionTurn object and can modify the weight and duration fields
  - segment_function now takes in a ExtractionSegment object and can modify weight and duration fields
  - properties.uturn_penalty is deprecated. Set it in the turn_function. The turn type is exposed as ExtractionTurn::direction_modifier.
  - properties.traffic_light_penalty is deprecated. Traffic light penalties now need to be set over in the turn function. Each turn with a traffic light is marked with ExtractionTurn::has_traffic_light = true.
  - Renamed the helper file profiles/lib/directional.lua to profiles/lib/tags.lua since it now provides more general tags parsing utility functions.
  - The car and foot profiles now depend on the helper file profiles/lib/handlers.lua.
- Infrastructure
  - Disabled link-time optimized (LTO) builds by default. Enable by passing -DENABLE_LTO=ON to cmake if you need the performance and know what you are doing.
  - Datafile versioning is now based on OSRM semver values, rather than source code checksums. Datafiles are compatible between patch levels, but incompatible between minor version or higher bumps.
  - libOSRM now creates an own watcher thread then used in shared memory mode to listen for data updates
- Tools:
  - Added osrm-extract-conditionals tool for checking conditional values in OSM data
- Trip Plugin
  - Added a new feature that finds the optimal route given a list of waypoints, a source and a destination. This does not return a roundtrip and instead returns a one way optimal route from the fixed source to the destination points.