Old, but still here.<sub> Config file change: "Permissions" -> "SP"</sub>
Compatible with next CB versions
Fixed #17 (chimneys can now be created in multiverse worlds)
Existing invisible chimneys will be recovered
If you use WorldEdit's SuperPickaxe to remove the block under smoke, chimney won't be removed.
If you're transitioning from b4 or lower, you need to redefine all chimneys because b5+ uses new save format. I'm sorry for inconvenience. :(
Rendering bug, which is not fixable in the plugin: If there's a water behind the chimney, it looks as if it was under water. I can't fix this one, sorry :(