This version is not compatible with really old data bases. I mean data bases from 2.x version or similar. Old data base converters have been removed to clean up code and they are deprecated at this point. If you for some strange reason still have data base from ice age, use 3.9.x version first and then new 4.x for data to be converted properly. You will not have any issues transiting from 3.x to 4.x data base, as there are no changes in data base structure it self.
Remade database handling system, to allot more robust in case of something strange happened to it. Like if you would be missing table or column, it gets recreated without causing issues. And now that config version number is more or less deprecated as it's not longer have an impact.
Optimized player data loading and now it's being done in sync mode and 5000 player data entries are being loaded in under one second. Before it was over 25...
Now you can convert data base data from sqlite or mysql with one command. No need to change anything in generalConfig file, only to settup mysql password and table name. You won't need to restart server too. Tho it's recommended to perform a full restart after conversion. And now there will be alot more data converted from one to another data base system. Hopefully without errors this time.
Added option to pay when player crafts item with custom names. This is helpful if you have custom recipes plugins and players are creating items with custom names. You will need to define items in crafting section like this
Changed event for recording armorstand creation, to eliminate the issue with some servers.
Added option in exploit protection to not pay when furnace of brewing stand is being filled up automatically with hoppers. Helps to manage economy in case players wants to create automated farms.
Some small fix for mythic mobs check
Added option to define MySQL ssl and sertificate checks.