Fix skylight calculation in setBlock. Fixes #174
Update to Minecraft 1.6.2

No changes were required, except the usual number updates. Version is
now 2.4.13.
"Fix" a NPE

I don't know why this happens yet, but it crashes servers.
Properly fix the NPE
Correctly follow height limits for caves
Corrected liquid source generation
Merge pull request #176 from Brokkonaut/patch-1

Bugfixes for Cave generation height limits and liquid source generation
Added Recursive BOB Loading

Added loading of `CustomObject`s from all subfolders of parent BOB
directory
Loaded `CustomObject`s are not enabled until after all recursive calls
have been made
Moved `file` and `name` to ConfigFile.java for better "say" methods

The `file` attribute is now inherited from ConfigFile by all children
Refactored `SettingsDir` in WorldConfig to `file` so that it can inherit
from ConfigFile
sayNotFound method in ConfigFile has been renamed logSettingNotFound
sayHadWrongValue method in ConfigFile has been renamed
logSettingValueInvalid
sayFileNotFound method in ConfigFile has been renamed logFileNotFound
logSettingValueInvalid and logSettingNotFound are now more helpful
Clear noise generator class.
Merge pull request #179 from Div-Element/feature-recursive-bob-loading

Added Recursive BOB Loading
Merge pull request #180 from Div-Element/feature-better-logging

Better Logging of Config load errors
Better argument name in ConfigFile.logFileNotFound
Merge from master
Merge branch 'master' into BetterRivers
Rename badly named things in chunk generator class. Also remove some redundant variables.