* Use Integer calculation instead of double, add unit-test
* Bring back StationIdent optimization
Originally, StationIdent was using byte[] to store names, so the extra
String allocation could be avoided. However, that produced incorrect
sorting.
Sorting is now moved to the result merging step. Here, names are
converted to Strings.
* Implement readStationName with SIMD 256bit
* Rebase and cleanup test code, now that it's in the project
* Fix seijikun formatting
* Fix test failure in specific jobCnt edge-cases
* Also switch to graalvm
