car - constant macro arrays


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# `car`

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macro based array manipulation constant techniques

## you wanted a quick LUT in const? here you go!

```rust
// please note that this is in no way performant or a good idea.
let squares: [usize; 0xffffffff] = car::from_fn!(|i| i * 2);
```

## completely stable!

for once!

## notice

with the advent of const closures in nightly rust, this crate is now only useful if you're on stable.
any nightly users should switch to using `x.map(const |x| ..)` or `from_fn(const |i| ..)` instead.

as a result, this crate is now deprecated.