Add a way to give control over individual emitters

[Peregrine05]

One thing would be to add a way to control individual emitters. Example: If you wanted only one emitter in the scene to be active, move the cursor over that specific emitter and then change its properties in a new area in the materials tab. Another thing would be to add a way to change blockstate properties. Example: Redstone lamps can be lit or unlit. Add a way to change properties of unlit lamps.

[Peregrine05]

Never mind about the second part. I did some testing, and I found that unlit lamps do emit light in chunky. The light is instead dimmer, because the texture for the unlit lamp has darker colors. So, that can be fixed with a resource pack, by using the lit redstone lamp texture also for the unlit redstone lamp.

[MadDog443]

This is actually a really old request I almost opened a while ago, and many others lol. #150