Fix problem with building on Maven, solution borrowed from https://github.com/Parquet/parquet-mr/issues/125#issuecomment-22554047
Target 1.6.4 and the newest version of Vault (1.2.27)
Reduce the usage of deprecated ItemStack constructor. Suppress the warning where not possible.
Don't use wrapper classes for primitive types where not necessary, it reduces performance.
Added permission to allow free catches despite costs in configuration file.
Shade org.mcstats to me.shansen.EggCatcher.mcstats to make package conflicts with other plugins using mcstats MUCH less likely.