better default value for boolean values

src/rougail/annotator.py

@@ -1110,6 +1110,12 @@ class FamilyAnnotator:
             variable.frozen = True
             if not variable.auto_save is True and 'force_default_on_freeze' not in vars(variable):
                 variable.force_default_on_freeze = True
+        if not has_value and variable.type == 'boolean':
+            new_value = self.objectspace.value()
+            new_value.name = True
+            new_value.type = 'boolean'
+            variable.value = [new_value]
+            variable.mandatory = True
 
     def change_variable_mode(self):  # pylint: disable=C0111
         if not hasattr(self.objectspace.space, 'variables'):

src/rougail/loader.py

@@ -20,7 +20,7 @@ CONVERT_OPTION = {'number': dict(opttype="IntOption", func=int),
                   'string': dict(opttype="StrOption"),
                   'password': dict(opttype="PasswordOption"),
                   'mail': dict(opttype="EmailOption"),
-                  'boolean': dict(opttype="BoolOption", initkwargs={'default': [True]}),
+                  'boolean': dict(opttype="BoolOption"),
                   'symlink': dict(opttype="SymLinkOption"),
                   'filename': dict(opttype="FilenameOption"),
                   'date': dict(opttype="DateOption"),