Hc dev

This pull request makes changes to the ObjectAPI interface and HyperObjectAPI class.

I've deprecated methods that use the deprecated ItemStack(int id, int amount) calls and added new methods that use ItemStack(Material material).

***I removed the old calls that initiated an item stack with "int durability" in the "int amount" argument.***

For the updated method of getTrueSaleValue() I added an extra argument "String economy" so the method is not limited to using the players economy.