Reloadable config (#26)

* Reloadable config

* readme

* live config reload

* test matrix

src/messages.rs

@@ -38,6 +38,7 @@ pub async fn backend_key_data(
     Ok(write_all(stream, key_data).await?)
 }
 
+#[allow(dead_code)]
 pub fn simple_query(query: &str) -> BytesMut {
     let mut res = BytesMut::from(&b"Q"[..]);
     let query = format!("{}\0", query);