-Fixed viewport stretch bugs

-Fixed input in viewport stretch bugs
-Fixed tilemap pixel overlap (really?)

demos/2d/platformer/engine.cfg

@@ -9,10 +9,16 @@ name_es="Plataformero"
 
 width=800
 height=480
-stretch_2d=true
+stretch_2d=false
 stretch_mode="viewport"
 stretch_aspect="keep"
 
+[image_loader]
+
+filter=false
+gen_mipmaps=false
+repeat=false
+
 [input]
 
 move_left=[key(Left), jbutton(0, 14)]