Dyad = does not work on boxes

Should have for example:
```
   ((<2)`(<3)) = (2;3)
1 1
```
Instead:
```
numpy._core._exceptions._UFuncNoLoopError: ufunc 'equal' did not contain a loop with signature matching types (<class 'numpy.dtypes.VoidDType'>, <class 'numpy.dtypes.VoidDType'>) -> None
```
