Changes
add getUnion function
	end
end
--[[
------------------------------------------------------------------------------------
-- getUnion
--
-- This returns the union of the values of n tables, as an array. For example, for
-- the tables {1, 3, 4, 5, foo = 7} and {2, 3, 5, bar = 6}, getUnion will return
-- {1, 2, 3, 4, 5, 6, 7}.
------------------------------------------------------------------------------------
--]]
function p.getUnion(...)
	local arrays = {...}
	local vals, ret = {}, {}
	for _, t in ipairs(arrays) do
		for k, v in pairs(t) do
			vals[v] = true
		end
	end
	for val in pairs(vals) do
		ret[#ret + 1] = val
	end
	table.sort(ret)
end	
--[[