Compact 1x1 loaders that use electricity. They are able to use separate filters on each belt lane, and can stack items on belts if stack inserters are available.
Mods introducing new content into the game.
Augmented or new ways of transporting materials - belts, inserters, pipes!
Entities which interact with the circuit network.
When saving blueprints, it isn't possible to set filters as parameters for blueprints, as you can for filters used in inserters.
Thanks for the report. I will look into it.
This was a Factorio engine issue. Fixed in Factorio 2.0.12
https://forums.factorio.com/117490
