Handle floating point NaN, Infinity and -Infinity

[exyi]

There is a number of problems with these special values:

• [ ] They are serialized as string in Newtonsoft.Json, we should add support to coercer for parsing NaN. Seems that it already support Infinity and -Infinity
• [ ] The bigger problem is that in order to serialize them for transfer back to server we'd need to serialize them as strings from JS. Javascript serializes all 3 as null which is not super helpful...