What's Changed
* bump owslib version due to vulnerability by arbakker in https://github.com/PDOK/ngr-services-spider/pull/23
* make duplicate filter deterministic by sorting on title before filtering by arbakker in https://github.com/PDOK/ngr-services-spider/pull/22
**Full Changelog**: https://github.com/PDOK/ngr-services-spider/compare/0.5.1...0.6.0