fix error trying to convert None to dict

Author: phenobarbital

datamodel/converters.pyx

@@ -253,6 +253,8 @@ cpdef object to_boolean(object obj):
 
     Convert and returns any object value to boolean version.
     """
+    if obj is None:
+        return False
     if isinstance(obj, bool):
         return obj
     if isinstance(obj, (bytes, bytearray)):
@@ -269,6 +271,8 @@ cpdef object to_boolean(object obj):
         return bool(obj)
 
 cpdef object to_object(object obj):
+    if obj is None:
+        return None
     if isinstance(obj, (list, dict,tuple)):
         return obj
     elif callable(obj):

datamodel/version.py

@@ -3,7 +3,7 @@
 __title__ = 'python-datamodel'
 __description__ = ('simple library based on python +3.8 to use Dataclass-syntax'
                    'for interacting with Data')
-__version__ = '0.6.3'
+__version__ = '0.6.4'
 __author__ = 'Jesus Lara'
 __author_email__ = '[email protected]'
 __license__ = 'BSD'