The examples don't work

[DrAlta]

The example in the readme doesn't even compile and I can't get the ones in the example folder to do anything.

[DrAlta]

graspan1.rs panic with

thread 'main' panicked at examples\graspan1.rs:15:44:
called `Option::unwrap()` on a `None` value
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
error: process didn't exit successfully: `target\debug\examples\graspan1.exe` (exit code: 101)

[lqd]

It needs the graspan data file to be passed, to fill the relations to run the computation.

But it looks like the examples are indeed showing the API rather than being ready to execute… The tests inside the code may be better in that regard, as they are small and complete (with some static data loaded).