json4s/json4s — pull request #159 by sebzz (2014-11-16 15:45:47+00:00)
Title: Adds support for serializing/deserializing infinity floats and doubles

Currently Double and Float infinity values are serialized as `Infinity`, which is illegal according to the json specification. This causes any deserialization to blow up.
This change explicitly serializes infinity values to a preset large value which is always deserialized as Infinity.