- Don't use wea.sum() on a table full of all the times we've recorded
so far
- Limit individual stats list lengths to 25 to avoid memory issues when
running with a large number of chunks
- Tally total times / metrics as we go to avoid memory issues
Next we need to implement a worldedit function to handle fetching the
manip data, calculating the heightmap, pushing it through this
convolutional system, and saving the changes back again.