message: Use more derives on CassandraType
diff: @@ -4,7 +4,7 @@ use std::net::IpAddr;
  use super::prelude::{Blob, Decimal};
  -#[derive(Debug)]
  +#[derive(Debug, PartialEq, Clone)]
  pub enum CassandraType {
  Ascii(String),
  Bigint(BigInt),
  