Update SIP Plan Proposal.txt

Added SIPAlchemy to make non-vanilla ores accessible without needing to tinker with worldGen. 
Added more ores for more tools (Tinker's Construct look-alike coming soon?)
Threw in a couple of ideas under "moar ideas"
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things to think on
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- Smelter station - how would it work
- SIPTools - how to create custom durability and mining levels
- SIPAlchemy - perfect maths; test combinations; create "alchemic slush" for when end result does not match an item. Save the alchemic power in the name/lore/nbt so it can be used later.
- smelter station: multiblock structure, or edited vanilla block?
- pressure chamber?
- compost bin: organic items go in, fertilizer comes out (possible use in a farming machine to speed up growth /create fertilizer bags (3 fertilizer items) that bonemeal a 3x3 area)
- animal poop: grass dies, create brown carpet that can be picked up and thrown in compost bin. Will give poison and nausea if not wearing a BioMask and BioGloves. Animal within 2radius of the "poop" will get poisoned if standing on it too long. (use scoreboards for this, maybe?)
- Ghasts drop tears randomly, blazes drop rods rarely, skeletons drop bones rarely, zombies drop flesh rarely, mooshrooms drop mushrooms rarely, iron golems drop vines rarely, 
- (I have more ideas but I got hungry and they went away. Will add when I recall)