indices 0.2.0

Zero allocation macros for retrieving multiple mutable indices from a mutable slice
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# Indices

[<img alt="github" src="https://img.shields.io/badge/github-mcmah309/indices-8da0cb?style=for-the-badge&labelColor=555555&logo=github" height="20">](https://github.com/mcmah309/indices)
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Zero allocation macros for retrieving multiple mutable indices from a mutable slice safely. e.g.
```rust
let (two, four) = indices!(slice, 2, 4);
```
Another e.g.
```rust
fn main() {
    struct Person {
        first: String,
        last: String,
    }
    let mut data = [
        Person { first: "John".to_string(), last: "Doe".to_string() },
        Person { first: "Jane".to_string(), last: "Smith".to_string() },
        Person { first: "Alice".to_string(), last: "Johnson".to_string() },
        Person { first: "Bob".to_string(), last: "Brown".to_string() },
        Person { first: "Charlie".to_string(), last: "White".to_string() },
    ];
    fn modify(data_slice: &mut [Person], index: usize){
        let (four, func_provided, three) = indices!(data_slice, 4, index, 3);
        four.last = "Black".to_string();
        func_provided.first = "Jack".to_string();
        three.last = "Jones".to_string();
    }
    let slice = data.as_mut_slice();
    modify(slice, 1);
    assert_eq!(data[4].last, "Black");
    assert_eq!(data[1].first, "Jack");
    assert_eq!(data[3].last, "Jones");
}
```
The following macros are provided:
```rust
indices!
try_indices!
indices_ordered!
try_indices_ordered!
```