Primitive Types does not contain Float

[SamN2997]

Hello,

We've just noticed that the primitive types do not support float (

object-mapper/mapper/object_mapper.py

Line 18 in 9d62e9b

primitive_types = { int, str, bool, date, datetime }

).

This is currently raising an exception when using float types.

Is there any plans to support floats in the future?

Sam