Update 1.22 is up now! Here's what's changed:

• improved working with references (the list can now have multiple items with the same ID)
• values added to an empty collection will remember the last settings
• added a warning when trying to export items with repeating IDs to a dictionary
• minor ui fixes and improvements

Thank you all for your feedback so far.

Some exciting updates coming soon so stay tuned! (And yes, Steam version is coming soon as well).