Think about ability to unit test in native language instead of haxe.

[vantreeseba]

Why:

There have been issues with C# output where things work in haxe unit tests, but the actual output code, when referenced as a dll, does not work quite the same.

Implemenation:

Output DLL.
Build a test program linked with DLL.
Have test program output error codes or etc (can we also use nunit or something nice?).
Think about a way to "automate" this and run it as an external test harness (through GH Actions?)