Fixed

• Fix Boolean field for both nullable and non-nullable cases in https://github.com/aminalaee/sqladmin/pull/336
• Fix Flatpickr not respecting readonly inputs in https://github.com/aminalaee/sqladmin/pull/336
• Disable batch delete when can_delete permission is not provided in https://github.com/aminalaee/sqladmin/pull/335

Full Changelog: https://github.com/aminalaee/sqladmin/compare/0.6.0...0.6.1