v0.7.0

• Null safety migration #50
• Parse duration if not empty #39

v0.6.0

• Refactor util/xml.dart
• Support RDF feed
• Support Syndication namespace

v0.5.1

0.5.1

• Support iTunes namespace #19
• Parse date strings into DateTime #22
• Add created & modified into dublin core namespace #27
• Upgrade xml package #28
• Fix linting warnings