- Otherwise, currently, if osrm-extract crashes at startup then
the tests continue on and will crash many many times.
- This also tests that --help returns an exit code of zero and will
catch if this behavior ever changes or is inconsistent between
the command line programs
* Adds a data structure, RasterSource, to store parsed + queryable data
* Adds bindings for that and relevant data structures as well as source_function and segment_function
* Adds relevant unit tests and cucumber tests
* Bring-your-own-data feature