JSON structure change - not backwards compatible

[nlautner10]

Describe the bug
"epWeightsStats" and "bonusStats" have recently been changed from a list of floats to two separate lists of floats - one "stats" and another "pseudoStats". Any previously saved JSON data fails to load properly.

To Reproduce
old JSON taken from Druid Discord - Moonkin Theorycrafting channel

https://discord.com/channels/253205420225724416/1005298133640679535/1051550008362663946

Simply try importing.

Expected behavior
To correctly import data, whether new or old format.

Desktop (please complete the following information):

• OS: Win111
• Browser: Chrome
• Version: 108.0.5359.125

Additional context
Obviously updates come and data structures change but I'd expect importing older data would still need to work unless there's some major versioning change to the entire program.
Merry Christmas/Happy Holidays <3