PwnPlantGrowth

• Resolve a bug where melon and pumpkin "blocks" would not grow on grass due to a race condition with checking grass growth.
• Add new feature to display biome growth rates for particular items by clicking on the growable block for that item.
• New feature config setting: report_growth: true/false - add this to your config.yml to toggle this feature.

Feature explanation:
If holding a carrot, left click a growable block like dirt, farmland, or grass to find out the growth rate of carrots.
If holding cocoa beans, left click a jungle log to find the growth rate of cocoa.

This is a beta feature and not all items may report, if any were missed let us know.