rebase + minor cleanup#1

Signed-off-by: [email protected] <[email protected]>

Author: pranav-bhatt

src/event/spec_version.rs

@@ -1,6 +1,4 @@
 use super::{v03, v10};
-use serde::export::Formatter;
-use snafu::Snafu;
 use std::convert::TryFrom;
 use std::fmt;
 use std::fmt::Formatter;