Base 2.4 is now available to download, for both web and App Store users. This update includes both new features and some bug fixes.
The main points for this version are a new logging system, with fast filtering and simplified preferences and improvements to the custom SQL tab. After running your own statements, you can now get a breakdown of each statements execution time.
This update also enables sandboxing for the Mac App Store version. I have decided not to enable it for the direct-sale version of Base until I am completely happy that it does not cause any issues with the App Store version. Lastly, as of this update, Base now requires Mac OS 10.7 (Lion) or newer to run.