Add default BOP Blood support. Closes #161
Remember progress in Spirit Furnace. Closes #162
Will only remember progress until the TE is unloaded, so a world restart/chunk unload will reset the progress anyways. So this is intented.
Make ticking machines disableable with a redstone signal. Closes #163
Prepare for 0.6.4 update.
Merge branch 'master' into version-1.7-0.7.0