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 #2150: Prevents routing over delivery ways and nodes
 - Issue #1972: Provide uninstall target
 - Issue #2072: Disable alternatives by default and if core factor < 1.0
 - Issue #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