Building Eyedropper Tool
Adds a hotkey (T key) to copy ploppable buildings.
To use, press T when hovering over a building. Press T again when done to finish copying.
If copying a growable, the copy must be placed in an area zoned as the correct type (ie if copying an office building, the copy has to be placed in an office zone) – otherwise the building will be removed soon after it is built.