A small proc-macro helper to time every statement in a given function (or item method).
```rust
fn foo(y: i32) -> i32 { let mut x = 1; let d = 1_000; x += d; x += y; x }
fn main() { foo(23); } ```
Prints:
funtime start: `foo`
took 1µs: `let mut x = 1 ;`
took 5µs: `let d = 1_000 ;`
took 2µs: `x += d ;`
took 2µs: `x += y ;`
funtime end: `foo` took 12µs
funtime start: `main`
funtime end: `main` took 36µs
Current version: 0.2.0