0.39.0

• Forward missing overwrite argument in move method. #602
• Fix clean recursive cleaning of nested collections (when collections=True). (by @x0Lazarus)
• Fix query-string parsing: keep empty values instead of dropping the key. (by @Master-Norna in #604)
• Read current wrapped keys when iterating in reverse. (by @x0Lazarus in #607)
• Honor dictionary wrappers and freezing in popitem method. (by @vitalivo in #601)
• Preserve falsy parent keys when flattening dictionaries. (by @rastagan-git in #600)
• Compare current wrapped contents when checking inequality. (by @x0Lazarus in #606)
• Preserve wrapper identity during in-place dictionary union. (by @Gonghan-Princess in #598)
• Prevent RecursionError when a dict contains itself. #592 (by @dualfroz in #597)
• Bump requirements, GitHub actions and pre-commit hooks.