Latest serde breaks cloudevents-sdk (cloudevents#110)

serde::export::Formatter -> std::fmt::Formatter
Signed-off-by: andrew webber (personal) <[email protected]>

Author: andrewwebber

src/event/data.rs

@@ -1,7 +1,7 @@
-use serde::export::Formatter;
 use serde_json::Value;
 use std::convert::TryFrom;
 use std::fmt;
+use std::fmt::Formatter;
 
 /// Event [data attribute](https://github.com/cloudevents/spec/blob/master/spec.md#event-data) representation
 #[derive(PartialEq, Eq, Debug, Clone)]

src/event/spec_version.rs

@@ -1,7 +1,7 @@
 use super::{v03, v10};
-use serde::export::Formatter;
 use std::convert::TryFrom;
 use std::fmt;
+use std::fmt::Formatter;
 
 pub(crate) const SPEC_VERSIONS: [&str; 2] = ["0.3", "1.0"];