Minor: update ContainerData to use InventoryHolder as ContainerBlock is deprecated, use new StorageMinecart class location.
Minor: update $deathcause variable to check PlayerDeathEvent rather than needing a cast from EntityDeathEvent.
Dev: Eclipse cleanup.
Dev: for CreatureSubjectTest - add unimplemented methods
Fix: CreatureData "shouldn't be here" message now on high verbosity only and various creature data calls are now correctly parsing via EntityType and id rather than just id.
Dev: add unimplemented methods to ExplosionAgentTest.
Add: color to log messages (high and above) - easier to keep track of verbosity levels and OD debug messages.

* config option color_log_messages to disable (if annoying or ESC codes appear, etc)
* no color for low/normal verbosity by default (I prefer green for normal)
* will add configurable color per level later