Update README

This removes workarounds related to inv callbacks which were later fixed by the engine.
In addition, pipeworks does (for years) provide the item index, thus such workarounds
were removed too and replaced by using the arguments provided.

Fixes an item duplication when using a pipeworks injector to pull from a digiline chest.

init.lua

@@ -12,10 +12,6 @@ digilines.mcl = minetest.get_modpath("mcl_core")
 if minetest.get_modpath("default") then digilines.sounds = default end
 if digilines.mcl then digilines.sounds = mcl_sounds end
 
--- Show a more helpful error message to the player
-assert(digilines.sounds,
-	"Digilines requires Minetest Game or a VoxeLibre (-compatible) game.")
-
 -- Backwards compatibility code.
 -- We define a proxy table whose methods can be called with the
 -- `foo:bar` notation, and it will redirect the call to the

lcd.lua

@@ -162,11 +162,7 @@ local generate_line = function(s, ypos)
 end
 
 local generate_texture = function(lines)
-	-- Active Mip Mapping ruins the text due to nearby transparent pixels at a distance.
-	-- Using `lcd_anyside.png` as base image fixes this (see issue #58)
-	local texture = ("lcd_anyside.png^[resize:%dx%d^[combine:%dx%d"):format(
-		LCD_WIDTH, LCD_WIDTH, LCD_WIDTH, LCD_WIDTH
-	)
+	local texture = "[combine:"..LCD_WIDTH.."x"..LCD_WIDTH
 	local ypos = math.floor((LCD_WIDTH - LINE_HEIGHT*NUMBER_OF_LINES) / 2)
 	for i = 1, #lines do
 		texture = texture..generate_line(lines[i], ypos)