Changes from 5.6
- Algorithm:
  - OSRM object has new option `algorithm` that allows the selection of a routing algorithm.
  - New experimental algorithm: Multi-Level Dijkstra with new toolchain:
    - Allows for fast metric updates in below a minute on continental sized networks (osrm-customize)
    - Plugins supported: `match` and `route`
    - Quickstart: `osrm-extract data.osm.pbf`, `osrm-partition data.osrm`, `osrm-customize data.osrm`, `osrm-routed --algorithm=MLD data.osrm`
- NodeJs Bindings
  - Merged https://github.com/Project-OSRM/node-osrm into repository. Build via `cmake .. -DCMAKE_BUILD_TYPE=Release -DENABLE_NODE_BINDINGS=On -DENABLE_MASON=On`.
  - `OSRM` object has new option `algorihtm="CH","CoreCH","MLD"`
- Internals
  - Shared memory notification via conditional variables on Linux or semaphore queue on OS X and Windows with a limit of 128 OSRM Engine instances
- Files
  - .osrm.datasource_index file was removed. Data is now part of .osrm.geometries.
  - .osrm.edge_lookup was removed. The option `--generate-edge-lookup` does nothing now.
  - `osrm-contract` does not depend on the `.osrm.fileIndex` file anymore
  - `osrm-extract` creates new file `.osrm.cnbg` and `.cnbg_to_ebg`
  - `osrm-partition` creates new file `.osrm.partition` and `.osrm.cells`
  - `osrm-customize` creates new file `.osrm.mldgr`
- Profiles
  - Added `force_split_edges` flag to global properties. True value guarantees that segment_function will be called for all segments, but also could double memory consumption
- Map Matching:
  - new option `gaps=split|ignore` to enable/disbale track splitting
  - new option `tidy=true|false` to simplify traces automatically