Sky_Render

I really hate to complain, but I kind of can't avoid it here: this latest version has borked layers completely. I work with a number of images with a huge number of layers (ie. well over 100), and now the program lags atrociously the moment I do anything with them. If I turn a layer on or off, the program takes almost 5 seconds to register it, and that lag grows to almost 20 seconds if I'm enabling or disabling multiple layers at once. Just scrolling through the list of layers causes it to hiccup, and if I try to use the mouse's scroll wheel, it's completely untenable as it jerks through the list at seemingly random intervals every 3 to 6 seconds. I don't know what changed to cause this, but I would be very happy if the next version fixed it.