Version 5.0.1 is a maintenance release that fixes a couple of critical bugs.
Main bug fix is related to Minimum System Version. Because of a mistake on my side, I have released version 5.0 without updating minimum OSX version. This caused Mac App Store to notify Yosemite users about this upgrade also if it’s not compatible with Yosemite.
Second major change fixes crashes happening when exploding tags in navigator view of photos view.
As minor change, I have added Ease In Ease Out timing function to drawers animation