I was not correctly checking if the status was even cached.
Actually fix it this time
Do not forget about the async chunk placeholder
Actually fix it this time I hope
No plugin tickets for getChunkAtGen(x, z, boolean)
Change ChunkStatus ABI
This is required for asynchronous IO. async io will require
calls to getChunkStatusIfCached to return the chunk status for a
chunk currently queued to save - this cannot be reasonably done
with current ABI
