v1.5.4

• Fix improper error handling of execute_query method when QueryItem is used: #82 (thanks to @bindi-mo)
• Add __fspath__ method to SimpleSQLite class: #86 (thanks to @bindi-mo)
• Implement __str__ method for OperationalError: #83 (thanks to @bindi-mo)
• Update DataProperty version constraint to 1.0.2

Full Changelog: v1.5.3...v1.5.4