Sequel 4.3.0 Released

Sequel 4.3.0 was released today! Full release notes are available, but here are some highlights:

• The tree and rcte_tree plugins now support composite keys.
• An error_sql Database extension has been added for getting the SQL that caused an exception.
• Dataset#qualify and Sequel.delay now work together.
• Guides about Sequel extensions and model plugins have been added.