Rated 5 out of 5 stars
Why wasn't this feature part of the lightning core from the very beginning?
Thank you, fabrix!
Unbelievable that it took until 2012 for another heroic plugin author to come up with it.
(Sorry, Philipp Kewisch, but your year view was outdated long ago)
Year view shows the necessity of continuous display of multiday events (Bug 199732, https://bugzilla.mozilla.org/show_bug.cgi?id=199732).
Unfortunately, i have to say that it takes ages to load a year's data from my servers and render the view. All in all this proofs once more the destiny of the thunderbird project altogether. Not only the codebase, but the whole idea of a communication client needs a complete redesign.