Add an empty CHANGELOG that follows keepachangelog.com format. Closes #23.

CHANGELOG

@@ -0,0 +1,10 @@
+# Changelog
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
+and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
+
+## [Unreleased]
+
+## [0.3.0] - xxxx-xx-xx
+

hammond-data/src/parser.rs

@@ -40,7 +40,6 @@ pub(crate) fn new_podcast(chan: &Channel, source_id: i32) -> NewPodcast {
 }
 
 /// Parses an `rss::Item` into a `NewEpisode` Struct.
-// TODO: parse itunes duration extension.
 pub(crate) fn new_episode(item: &Item, parent_id: i32) -> Result<NewEpisode> {
     if item.title().is_none() {
         bail!("No title specified for the item.")