Highly functional (updated for v0.2) Rated 4 out of 5 stars
This extension is much more functional than Lightning (v0.5) by itself. The addition of the ability to sort (and see) the priority is a great advantage over the random ordering that Lightning does on its own.
Also, I appreciate moving the calendar into the tabbed area to save space.
My one enhancement request is to add the priority settings to the "To Do" task context menu. To change the priority setting requires a lot of clicking otherwise. ... deleted v0.2 ...
NOTE (v0.2): Version 0.2 now has priority settings in the context menu. Much nicer. Thanks "Raffke!"