There were quite a lot of changes I made in just two hours, apparently something makes me more productive at night xD
Or maybe this update is just full of bugs that I can't see yet because of yes

• Support for saving and loading worlds into separate files, for example if you want to send it to someone
• Save slots are now sorted by date
• Fixed a bug where you could override an existing world by entering the same name
• Added a save button as pressing Enter was not so intuitive
• Some team panel and actions fixes
• Left shift will not move to player if left control pressed (to prevent camera moving when taking a screenshot using Control+Shift+S on Windows)
• rip player uuid in char description