Now You Don't (have to use a button to activate the tool anymore)!
Tools in OpenRCT2 automatically close the window that is using them should another tool be selected. This is the case with the land tool, the water tool, and more. So this update makes the Now You See It! plugin do the same thing.
The tool is still activated automatically when the window is launched. If the window closes and you want to re-activate the tool, just re-open the window. As simple as that!
Check out the README for installation instructions.