CrazySpawner: get EntityType from Spawner
CrazySpawner: improve description
CrazySpawner: added ClassSpawner (for Fireworks)
CrazySpawner: improve error messages
CrazySpawner: added support for FallingBlock
CrazySpawner: use DetectionMeta instead of PeacefulMeta
CrazySpawner: added PeacefulProperty
CrazySpawner: removed deprecated comment
CrazySpawner: added missing language entries
CrazySpawner: added FireworkProperty
CrazySpawner: updated comments
CrazySpawner: updated default Item.yml
CrazySpawner: removed old comment
CrazySpawner: implemented method for NamedEntitySpawner
CrazySpawner: replace short comment with a usefull one