Added "drop_items" config boolean
Controls whether items are dropped if the falling block can't form a
block
Also greatly reduced default slide schedule rate limits
Fixed block duping problem
Multiple falling blocks could be created for one block
Reduced ring buffer size a bit.
Version => 1.0.0
Fix potential server lockup bugs
If max_slides_per_tick was <= 0, or too low to schedule a new slide, a
lockup condition (infinite loop) existed.