I'll be super happy to include it in Lix.
I'd like to rename some tiles: raymanni/holiday/holidayplank_1.png should become raymanni/holiday/plank_1.png, and, likewise, all filenames that start with holiday should lose holiday. This information is already in the path holiday/.
Since deco_1 and deco_2 are not baubles and their strings, I'd rename these two to lights and wreath. This makes a gap in the numbers of deco_*.
But all this is very high-level criticism. The set is superb and varied. Especially the planks pull massive weight with a minimal assortment of different tiles.
-- Simon