New features and Premium merge! (1.6.0)

(Nov/30/2023) IMPORTANT MESSAGE
The normal version will become the premium version, everyone who has the normal version will have the new update with many more features! *The price of the plugin will increase to 15 USD for new purchases.

(Dec/07/2023) IMPORTANT MESSAGE AND UPDATE
- The premium version is now the normal version, everyone with the normal version
can use the premium features now!

Bug Fixes:
- Fixed a bug where the crafting panel did not update if the player had an empty inventory.
- Fixed a bug where after crafting an item the panel could not be opened again.
- Fixed a bug where the player can get stuck forever after crafting an item.
- Fixed a bug weird bug that crashed the game.
- Fixed a offset bug in the icon list.

Experimental features:
Turn on the switch in the "wait for switch" field before opening a crafting panel so that the system waits for the common event in the "common to wait" field,
this common event should have an assign variable from the "Craft result" field (-1: fail, 0: normal, 1: better item quality), Upon completion of the common event,
it should turn off the switch in the "wait for switch" field to proceed with the crafting process.
Use $bestquality(ItemName) in an item that has a better quality item, player will get that item if craft result was 1.
This explanation will be expanded in the documentation below soon.