Handle silk touch

[Michael-Zinn]

Silk touch interaction wasn't even tested yet.

But what's the best solution for silk touch? Should it drop the combined block or separate blocks?

• Silk touch doesn't drop things like "Block with redstone dust on top" or "Cobblestone with Vine attached to it". So maybe these items should decompose, making slime behave like a completely separate object?
• Getting special blocks with silk touch is pretty cool, so maybe it would be disappointing if you couldn't get these special blocks with silk touch? What's the harm anyway?

[Michael-Zinn]

Requires tests, depending on how broken this is it needs to be part of the next milestone (safe beta release) or, if it isn't that broken, this could be delayed for the polished release. Putting it in the next milestone until I know how severe this is.

[Michael-Zinn]

Currently, Silk Touch has no effect, tools work like regular tools, decomposing the item you hit. Since this isn't a serious issue I moved this ticket to the "polish" milestone.