Bukkit

- Default child config for the Nether.
- Added quartz in the default config for the Nether, disabled by default. If you want the plugin to generate quartz for existing worlds, set the autoMode flag to true in config_hell.yml. Otherwise leave it disabled, as the plugin makes little to no sense in that world.
- Added support for potions, enchantments and entity eggs for chest inventory items.
- Fixed the misleading message from the biome restriction/exclusion.
- Added ability to define entities by type rather than name for egg and entity spawners (much more easier for end users than fishing out their names from the code files).
- Fixed a bug where some custom materials were not properly generated inside chests.
- Tweaked the built-in XRay to work properly in the Nether world.

Tested in CB 1.5.1 R0.1 Dev and 1.5.2 R0.1 Beta

It's confirmed that the plugin fails to create spawners for non-living entities. Please change the TNT spawner definition under definitions.yml to spawn a standard mob type.

Problem seems to be MC/Bukkit related. If you want to increase the chance for this bug to be resolved, please vote on their bug tracking website.