Added Routing Tube
+ It is quite configurable and it allows you to specify which direction items go, and what colour to paint them
* Shortest distance is still observed within matching filters. So if 2 filter lines match the item, the shortest path will be used, or random if they are equal.
* There are 9 filter lines that can specify 4 items each
* Each filter line can specify the direction and colour to apply to items that match the filter line
* Currently no graphics for it
TubeItem colours are now displayed