Remove "po/du". "du" is invalid language code (fixes #881).
Add escaping to world list in main menu (fixes #896).
Normalized heat and adjusted humidity
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Translated using Weblate (Russian)
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Fix bug in pathfinder causing endless loop in some situations
Use wstring for vertlabels
Add minetest.parse_json, engine.parse_json
Server::ProcessData(): call getBanName once instead of twice (#639)
Add SHA1 interface to ScriptApi