Merge remote-tracking branch 'upstream/master'

README.md

@@ -43,6 +43,7 @@ mymod.speed_monoid = player_monoids.make_monoid({
 		for _, speed in pairs(tab) do
 			res = res * speed
 		end
+		return res
 	end,
 	identity = 1,
 	apply = function(speed, player)
@@ -111,6 +112,7 @@ newmod.speed_boosts = player_monoids.make_monoid({
 		for _, speed in pairs(tab) do
 			res = math.max(res, speed)
 		end
+		return res
 	end,
 	identity = 1,
 	apply = ???

test.lua

@@ -14,6 +14,8 @@ local function test(player)
 	minetest.chat_send_player(p_name, "Your speed is: " .. speed:value(player))
 
 	minetest.after(3, function()
+		local player = minetest.get_player_by_name(p_name)
+		if not player then return end
 		speed:del_change(player, ch_id)
 		minetest.chat_send_player(p_name, "Your speed is: " .. speed:value(player))
 	end)