New Update! (3.2.0)

- Replaced the Newtonsoft Json library with Utf8Json, which deserializes json assets significantly faster.
  ↳ The importer is now standalone and has no more dependency on an external library.
  ↳ The new library should fully support Unity in any of the supported versions and with IL2CPP. However if there are any direct compatibility issues, feel free to post an issue. 
- Fixed a load failure related to using the internal icons for any tile layer or field instance tiles.
- Fixed an inconsequential error from appearing after clicking away from an importer with dirty changes and selecting save in the popup