Added option to format stat count with commas. Added config validation
Added option to format stat numbers comma separated (Off by default) ex: "Destroyed blocks: 55,412". It will auto convert to the desired setting on/off the next time you use the item or when you merge the item through the anvil.
Added in a validation error for when the text node is invalid. I now check for a blank config node as well as any colons in the text. Both scenarios would cause the plugin issues. For now I am just showing a message in the log but in a later release I will change it to disable the plugin.