i would love it if you added to this place shown in the screenshot, an "i" button, for invert selection.
the reason being, sometimes you have some dungeons in for example +13 and other in +14.
this option would make searching faster.
you could be searching for specific +13, searching for 13-13 and X dungeons (so it only shows +13s) keys you need, then click INVERT, and just write 14-14 in the search to quickly search for the 14s you need, which would be the inverted selection of the 13s you need.
https://gyazo.com/27ff72068e7b95154fbea421ceadd568

Sure, good idea and easy to implement. I'm busy until next week, but can do it then.

:) cool, ty )