--- Creates a table that stores data in keys.
-- @source	https://riptutorial.com/lua/example/13407/search-for-an-item-in-a-list
-- @param	list	table	The table of values to convert to keys.
-- @return	table	The table of (key,true) pairs.
function worldeditadditions.makeset (list)
  local set = {}
  for _, l in ipairs(list) do set[l] = true end
  return set
end
