Signals compat

[josephcsible]

We should add compat with the Signals mod. Here's what I have in mind:

• Writing minecarts' schedules (as a list of strings)
• Writing minecarts' next destination (as an integer index)
• Forcibly changing signals, like the rail network controller lets you do (they can already be read with an ordinary redstone reader)
• Some way of directing items either into the cart's inventory or the engine's inventory, possibly by letting you change a cart hopper's mode

[rubensworks]

Haven't used that mod myself yet, but this definitely sounds like an interesting compatibility to add.

[josephcsible]

@rubensworks Which aspect readers/writers do you think I should use for this? Should I make a "Block Writer” and "Entity Writer”?

[rubensworks]

Perhaps "Machine Writer" instead of "Block Writer" might be better? "Entity Writer" sounds good.

[josephcsible]

Blocked by CyclopsMC/IntegratedDynamics#375

[rubensworks]

Can't you already start implementing it already using that feature branch of ID? I'd rather not merge it in master until the feature release.

[josephcsible]

Yeah, I can. Just noting that it won't be mergeable without that.