Pspspsps, we've been planning to add this feature for a while, and now it's finally live!
New feature: Grab

By holding down the left mouse button, you can now grab cats and move them to any free slot, or have them swap place with another cat; in addition to this, all cats will remember their slot even after you close the game.
We're also happy to report that we found and fixed the bug that caused a savefile corruption to some users!
v1.2.2 Changelog
- New feature: Grab.
- Cats will remember their slot between play sessions.
- Cats won't shuffle position randomly on room change anymore.
- Fixed a bug corrupting the save file on game launch
- Added the current room's income in the tooltip while hovering the money label.
- Improved performance when the Task Log is open.
- Fixed an issue with cat sprites overlapping incorrectly.
- Fixed a glitch where the EXP Booster button would change size when greyed out.