Need to Breathe!

0.1.1beta:

• New hazmat suit. The suit gives full protection but the chestplate has to be filled with compressed air (using the air compressor) and the suit has to be complete (i.e. all pieces must be worn)
• More optimal (but less accurate) algorithm for handling clean air in spheres. If you have an existing world you *must* remove needtobreathe.dat for this to work! You can also go back to the original (slower) algorithm in the config
• Note that the information glasses don't show anything about the clean air with the new algorithm. That's a todo