This is a feature request to add f16 support.
This can be useful for machine learning, including (I believe) for having ndarray with f16 on wasm.

Rust has an f16 primitive (nightly-only), but some crates from the ecosystem use half::f16 -- in which case also offers the half::bf16 also.

Taking a look at how ndarray supports f32 and f64, it appears to easily support it, requiring some minor changes (leaving tests and documentation aside).

I'll try having a draft PR as a showcase, if this gets considered for inclusion.