Changes from 5.1.0

- API:
 - new parameter `annotate` for `route` and `match` requests.  Returns additional data about each
   coordinate along the selected/matched route line.
 - Introducing Intersections for Route Steps. This changes the API format in multiple ways.
     - `bearing_before`/`bearing_after` of `StepManeuver` are now deprecated and will be removed in the next major release
     - `location` of `StepManeuvers` is now deprecated and will be removed in the next major release
     - every `RouteStep` now has property `intersections` containing a list of `Intersection` objects.

- Profile changes:
 - duration parser now accepts P[n]DT[n]H[n]M[n]S, P[n]W, PTHHMMSS and PTHH:MM:SS ISO8601 formats.

- Infrastructure:
 - Better support for osrm-routed binary upgrade on the fly [UNIX specific]:
   - Open sockets with SO_REUSEPORT to allow multiple osrm-routed processes serving requests from the same port.
   - Add SIGNAL_PARENT_WHEN_READY environment variable to enable osrm-routed signal its parent with USR1 when it's running and waiting for requests.
 - BREAKING: Intersection Classification adds a new file to the mix (osrm.icd). This breaks the fileformat for older versions.
 - Disable http access logging via DISABLE_ACCESS_LOGGING environment
   variable.

- Guidance:
 - improved detection of turning streets, not reporting new-name in wrong situations

Release OSRM 5.1.0

Changes with regard to 5.0.0
- API:
  - added StepManeuver type `roundabout turn`. The type indicates a small roundabout that is treated as an intersection
     (turn right at the roundabout for first exit, go straight at the roundabout...)
  - added StepManeuver type `on ramp` and `off ramp` to distinguish between ramps that enter and exit a highway.
  - reduced new name instructions for trivial changes
  - combined multiple turns into a single instruction at segregated roads`

- Profile Changes:
 - introduced a suffix_list / get_name_suffix_list to specify name suffices to be suppressed in name change announcements
 - street names are now consistently assembled for the car, bike and walk profile as: "Name (Ref)" as in "Berlin (A5)"
 - new `car.lua` dependency `lib/destination.lua`
 - register a way's .nodes() function for use in the profile's way_function.

- Infrastructure
 - BREAKING: reordered internal instruction types. This breaks the **data format**
 - BREAKING: Changed the on-disk encoding of the StaticRTree for better performance. This breaks the **data format**

- Fixes:
 - Issue Project-OSRM#2310: post-processing for local paths, fixes Project-OSRM#2310
 - Issue Project-OSRM#2309: local path looping, fixes Project-OSRM#2309
 - Issue Project-OSRM#2356: Make hint values optional
 - Issue Project-OSRM#2349: Segmentation fault in some requests
 - Issue Project-OSRM#2335: map matching was using shortest path with uturns disabled
 - Issue Project-OSRM#2193: Fix syntax error position indicators in parameters queries
 - Fix search with u-turn
 - PhantomNode packing in MSVC now the same on other platforms
 - Summary is now not malformed when including unnamed roads
 - Emit new-name on when changing fron unanmed road to named road

Release OSRM 5.1.0 RC2

This includes the StaticRTree improvements and breaks the data format to RC1.

Release 5.1.0 RC 1

Changes with regard to 5.0.0

   - API:
     - added StepManeuver type `roundabout turn`. The type indicates a small roundabout that is treated as an intersection
        (turn right at the roundabout for first exit, go straight at the roundabout...)
     - added StepManeuver type `on ramp` and `off ramp` to distinguish between ramps that enter and exit a highway.
     - reduced new name instructions for trivial changes
     - combined multiple turns into a single instruction at segregated roads`

   - Profile Changes:
    - introduced a suffix_list / get_name_suffix_list to specify name suffices to be suppressed in name change announcements
    - street names are now consistently assembled for the car, bike and walk profile as: "Name (Ref)" as in "Berlin (A5)"
    - new `car.lua` dependency `lib/destination.lua`
    - register a way's .nodes() function for use in the profile's way_function.

   - Infrastructure
    - BREAKING: reordered internal instruction types. This breaks the **data format**

   - Fixes:
    - Issue Project-OSRM#2310: post-processing for local paths, fixes Project-OSRM#2310
    - Issue Project-OSRM#2309: local path looping, fixes Project-OSRM#2309
    - Issue Project-OSRM#2356: Make hint values optional
    - Issue Project-OSRM#2349: Segmentation fault in some requests
    - Issue Project-OSRM#2335: map matching was using shortest path with uturns disabled
    - Issue Project-OSRM#2193: Fix syntax error position indicators in parameters queries
    - Fix search with u-turn
    - PhantomNode packing in MSVC now the same on other platforms
    - Summary is now not malformed when including unnamed roads
    - Emit new-name on when changing fron unanmed road to named road

Release 5.0.2

- Fixes:
 - Issue \Project-OSRM#2335, map matching was using shortest path with uturns disabled

Release 5.0.1

Changes since 5.0.0:

- Fixes:
 - Issue Project-OSRM#2309: Fixes local path looping, same coordinates crash
 - Issue Project-OSRM#2311: Fixes invalid assertion in loop unpacking
 - Issue Project-OSRM#2310: Local paths could falsely end up trying to remove the start step

OSRM Release 5.0.0

Changes with regard 5.0.0 RC2:
- API:
 - if `geometry=geojson` is passed the resulting geometry can be a LineString or Point
   depending on how many coordinates are present.
 - the removal of the summary field was revered. for `steps=flase` the field will always be an empty string.

Changes with regard to 4.9.1:
- API:
 - BREAKING: Complete rewrite of the HTTP and library API. See detailed documentation in the wiki.
 - BREAKING: The default coordinate order is now `longitude, latidue`. Exception: Polyline geometry
     which follow the original Google specification of `latitdue, longitude`.
 - BREAKING: Polyline geometries now use precision 5, instead of previously 6
 - BREAKING: Removed GPX support
 - New service `tile` which serves debug vector tiles of the road network
 - Completely new engine for guidance generation:
    - Support for highway ramps
    - Support for different intersection types (end of street, forks, merges)
    - Instruction post-processing to merge unimportant instructions
    - Improved handling of roundabouts

- Tools:
 - BREAKING: Renamed osrm-prepare to osrm-contract
 - BREAKING: Removes profiles from osrm-contract, only needed in osrm-extract.
 - Abort processing in osrm-extract if there are no snappable edges remaining.
 - Added .properties file to osrm-extract ouput.
 - Enables the use of multiple segment-speed-files on the osrm-contract command line

- Profile changes:
 - Remove movable bridge mode
 - Add `maxspeed=none` tag to car profile.
 - A `side_road` tag support for the OSRM car profile.

- Fixes:
 - Issue Project-OSRM#2150: Prevents routing over delivery ways and nodes
 - Issue Project-OSRM#1972: Provide uninstall target
 - Issue Project-OSRM#2072: Disable alternatives by default and if core factor < 1.0
 - Issue Project-OSRM#1999: Fix unpacking for self-loop nodes not in core.

- Infrastructure:
 - Cucumber test suit is now based on cucumber-js, removes Ruby as dependency
 - Updated to mapbox/variant v1.1
 - Updated to libosmium v2.6.1
 - Remove GeoJSON based debugging output, replaced by debug tiles

Changes to 5.0.0 RC1:

- Profiles:
   - `properties.allow_uturns_at_via` -> `properties.continue_straight_at_waypoint` (value is inverted!)
- API:
   - Removed summary from legs property
   - Disable steps and alternatives by default
   - Fix `code` field: 'ok' -> 'Ok'
   - Allow 4.json and 4.3.json format
   - Conform to v5 spec and support "unlimited" as radiuses value.
   - `uturns` parameter was replaced by `continue_straight` (value is inverted!)
- Features:
   - Report progress for gennerating edge expanded edges in the edge based graph factory
   - Add maxspeed=none tag to car profile.
   - Optimize StaticRTree code: speedup 2x (to RC1)
   - Optimize DouglasPeucker code: speedup 10x (to RC1)
   - Optimize WebMercator projection: speedup 2x (to RC1)
- Bug fixes:
   - issue 2195: Resolves issues with multiple includedirs in pkg-config file
   - issue 2219: Internal server error when using the match plugin
   - issue 2027: basename -> filename
   - issue 2168: Report correct position where parsing failed
   - issue 2036: Add license to storage and storage config exposed in public API
   - Fix uturn detection in match plugin
   - Add missing -lz to fix linking of server-tests

Changes since 4.9.1

- Renamed osrm-prepare into osrm-contract
- osrm-contract does not need a profile parameter anymore
- New public HTTP API, find documentation [here](https://github.com/Project-OSRM/osrm-backend/wiki/New-Server-api)
- POST support is discontinued, please use library bindings for more complex requests
- Removed timestamp plugin
- Coordinate order is now Longitude,Latitude
- Cucumber tests now based on Javascript (run with `npm test`)
- Profile API changed:
   - `forward_mode` and `backward_mode` now need to be selected from a pre-defined list
   - Global profile properties are now stored in a global `properties` element. This includes:
     - `properties.traffic_signal_penalty`
     - `properties.use_turn_restrictions`
     - `properties.u_turn_penalty`
     - `properties.allow_u_turn_at_via`

Known issues:
- Units uncovered that zero-length trips might have a duration bigger than zero Project-OSRM#2134
- pkg-config does not work as expected, include paths might be insufficient Project-OSRM#2195
- Position hint on requests with syntax error might be off Project-OSRM#2193
- Queries with integer coordinates might fail to parse if `.json` is added Project-OSRM#2173

Pre-Release 7

* new file .properties needed by the server
* .datasource_names and .datasource_index are not optional anymore
* .timestamp is not optional anymore
* uturns parameter is not per-via but global
* fixes incorrect turn coordinates