v1.2
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- changed wdata.write method to take table parameter "flags" instead of boolean "styled"
- added flag option "null_to_table" for wdata.write that converts null values to tables
- removed "core" methods aliases


v1.1
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- changed "error" message to "warning" when file not found for reading


v1.0
----
- initial release
- added method for reading json data from world directory
- added method for writing json data to world directory