Lightweight zero-dependency Rust crate that adds a Server-Timing header to the response of a request.
```rust
use simpleservertiming_header::Timer;
fn handlerequest() {
let mut timer = Timer::new();
// ... do some stuff
timer.add("parseheaders");
// ... do some more stuff
timer.add("getdbdata");
// Sets the Server-Timing: parse_headers;dur=0.1, get_db_data;dur=0.2 header
addheader(timer.headerkey(), timer.header_value());
}
```