Sakib Hadžiavdić

Debug point statement

1

Would be neat to have a "stop execution here" button.

Arrays support

1

http://www.flowgorithm.org/index.html supports flat arrays like `int[]`, meaning 1-level depth. Maybe it would be nice to support matrices too, since some mathy problems do require them.

https://stackoverflow.com/questions/55067919/how-to-return-a-file-to-download-in-java-using-undertow

It will be easier to understand and rewrite to another language, if someone needs it.

This upgrades scala native to 0.5.4. And I've included a tiny fix for windows tests..

## Motivation When querying relational databases you usually get a flat result (unless using an ORM). But on the API layer you usually want to expose that information as structured...