vecmerge

A macro for merging vectors.

Examples

```rust use vecmerge::vecmerge;

fn main() { assert_eq!(vec![1,2,3,4,5,6], vecmerge!([1,2,3] + [4,5] + [6]));

let a = vec![1,2,3];
let b = vec![6];

assert_eq!(vec![1,2,3,4,5,6], vecmerge!(a + [4,5] + b));

assert_eq!(vec![1,2,3,4,5,6], vecmerge!(vec![1,2,3] + vec![4,5,6]));

} ```