Bringing the sickle to the new branch

Ok, now I managed to get the new branch and pushed to the correct branch also.

So it's decided to be 3x3x3 on leaves and 5x5x1 on everything else (flowers, crops, grass etc).

But should the sickle also work on Saplings? I would prefer that it doesn't, since it would be mostly un-wanted.

I'll work now on creating the sickles of other materials (wood, stone, gold, diamond, gems and maybe even other ores).

PS: You should close the other PR and keep this one open.