The new world populator on some engines are multi-threaded, however, minecraft does not allow to remove entities outside main-thread. As entity populator spawned entity and then removed when there were no spot for it, servers crashed.
The issue should be fixed now as I add custom entity bounding box calculator before it is spawned to check if there is place for entity.
Fixes#86
* old generators in new api
* add NewMaterialPopulator
* forgot to prevent physics loop
* I see... the new generator creates caves
* apply getMinHeight and getMaxHeight
* getMinHeight and getMaxHeight for populators too
* summarize
* general reformat on populators
* small typos
* comment sections
* small reformat
* warning on config
* apply new API on BlockPopulator p.1
* apply new API on BlockPopulator p.2
* apply new API on BlockPopulator p.3 (final)
* hasAI option
Tweaks to config.yml to be more cave-y.
Entities are set to not despawn. Probabilities of materials and entities
can have decimals and be sub 1% if required. For some entities, 1% was
too high a rate.
Adds a debug setting in config.yml that will enable you to see where
entities have been spawned. It can be removed at some point.