boxarray 1.3.1

Safe way to allocate and initialize nested arrays directly on the heap in Rust.
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# boxarray
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Safe way to allocate and initialize nested arrays directly on the heap in Rust.  

## Usage

To use `boxarray` in your Rust project, simply add it as a dependency in your `Cargo.toml`:
```toml
[dependencies]
boxarray = "1.3.1"
```

Then import and use it in your project:
```rust
use boxarray::boxarray;
use boxarray::boxarray_;

fn main() {
  let v = 7.0;
  let a: Box<[[[f64; 3]; 2]; 4]> = boxarray(v);
  println!("{a:?}");

  let f = |((((), i), j), k)| (i+j*k) as usize;
  let a: Box<[[[usize; 3]; 2]; 4]> = boxarray_(f);
  println!("{a:?}");
}
```