Add an attribute to allow you to be more or less strict about deserializing numeric bson types to numeric C# primative types

The proposed attribute could be applied to numeric properties of classes that are deserialized from Bson Documents It shall allow you to become more strict or less strict about:
gaining precision
losing precision
gaining the ability to have a fractional part
losing a fractional part
going from float to decimal
going from decimal to float (if BSON is amended to allow a fixed point decimal)

I'll propose the name BsonNumericConversionAttribute, but I am open to a shorter name if it does not reduce the clarity of what it does.