Simple throttler for Rust.
It has just a really simple and easy to use throttler struct right now, but fancier ones will be added in the future.
The following example creates a throttler that allows 4 operations every second, and uses it to print the time 10 times.
```rust use throttler::simple::SimpleThrottler; use std::time::{Duration, Instant};
let mut t = SimpleThrottler::new(4, Duration::new(1, 0));
for i in 0..10 { t.wait(); println!("{} {:?}", i, Instant::now()); } ```
Feel free to contribute whatever you want.