v4.1.0

What's Changed

• Add tests for geojson integer ids by @lognaturel in #667
• Return empty string if child has no value by @lognaturel in #705
• Add LineString and Polygon parsing by @seadowg in #707
• Checking relevance of an inner repeat group should be possible even if its parent group does not exist yet by @grzesiek2010 in #710
• Add base64-decode by @lognaturel in #708

Full Changelog: v4.0.0...v4.1.0