[Added] Officially open API, you can directly import jar and carry out secondary development (wiki will be added later)
[Added] Added option "Change-Balance-Only-When-Online" in Merchant.yml. (This option needs to be enabled when the currency system does not support offline manipulation of player balances. Like Essentials+Vault, etc)
[Fixed] Fixed some bugs in notation ("," cannot be used as a decimal point)
[Fixed] Fixed a bug in version 1.13 that would cause an error to open the GUI.