Golem Crew

Golems are real workers: they work all the time.

• Every golem with a job (Farmer, Animal Keeper, Guard, Collector, Lumberjack) keeps working wherever you are in the world, and on a server also while its owner is offline and nobody is online. Golem Crew keeps each golem's work area loaded (at most 7 x 7 chunks per golem; golems next to each other share them), so crops keep growing and the crew keeps working.
• So it can never overload a server, it keeps at most 2,500 chunks loaded in all (setting maxKeptChunks). Golems that don't fit only work while a player is near.
• An empty dedicated server doesn't pause while golems work (pause-when-empty-seconds in server.properties).
• The menu's "Work while away" button now says "Works all the time". A server that wants the old way sets golemsAlwaysWork to false in config/golemcrew.json.
• Show golems never stop at a full chest: golems of the owners in showcaseOwners throw away what doesn't fit once every chest in their area is full. Everyone else's golems still stop and say "The chest is full!", so nothing of theirs is lost.
• Settings files from 0.3.x get the new settings by themselves.