fix ron & json serialization of large floats #106
Merged
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Currently for JSON and RON, nanoserde serializes large floats as integers when possible, and during deserialization first reads them as integers and later converts to a float. This leads to a bug when handling large numbers. For example, 1e30 is serialized as "1000000000000000000000000000000", which attempts to be deserialized as a u64 and errors with a positive overflow.
This PR changes float serialization to use the debug trait rather than the display trait, resulting in the representation "1e30" which is deserialized directly to a float.