FrameStore

1. Fixed vanishing shop's content when selling whole stacks.
2. Added double types shops (buy and sell in one shop!)
3. Added update notifications
4. Possibly fixed #5 issue on github (custom names)
5. (Fixed)Removed possibility to destroy shops using creepers and other mobs
6. Many other fixes

If you did not change anything in config.yml it's recommended to delete this file