This mod adds a button that will put a landfill tile under every entity if you have a blueprint in hand. Very useful for complex reactor setups and blueprinting rail.
If we don't have any update from the author maybe someone is willing to do the fork of this great mod. It is SOOOOOOOOOOOO useful that it need to be part of factorio mods :)
Well, you only need to change two lines for it to work in 1.1:
in info.json, change the value of factorio_version to 1.1
in control.lua, line 2 should be this instead :
local mod_gui = require("mod-gui")