Fixed hitboxes for curved-stone-wall doors (both left & right) and the stone roundtop double doors. All doors & shutters now working right again!

Adjusted hitboxes of basic wood/stone doors and window shutters for Planets system.

Added doors for the three types of normal-sized curved stone walls:

-- Central Doorway
-- Left Doorway
-- Right Doorway

Still a few more stone doorway styles to finish off. Then I can start thinking about how the stone-window shutters will work.

Minor update -- just created better icons so you can see better what each object will look like before you place it.

Updated texturing on side-opening shutters so they don't look like mirror images. Also tweaked the hitbox for the side-opening shutters. It's still not ideal, but better than before. Please note: If you put iron bars in the window with the side-opening shutters, you can still find the hitbox to open/close the shutters, but it will be trickier.

Added traditional side-swinging double shutters for windows. Now your windows can either have the large propped-up vertical shutter, or the set of two swinging shutters. I've made the new shutters swing almost a full 180 degrees wide, so they open nicely out of the way and don't block your view.

Refined the wooden doorjamb for the wooden-wall doors. Texture looks a lot nicer now, flows well with the actual doorframe look.

Also cleaned out a whole lot of unneeded polygons in my door frames. I want these to be peak efficiency so that you can build to your heart's content.

Refined the double-wide stone door to include a full stone door-jamb in it as well. All doors now have jambs, which the doors fit snugly against when closed. A lot more realistic looking now.