Added first version of DebugManager. Implemented draft of the rule engine

tests/TestUsingFileBasedSheerka.py

@@ -3,6 +3,7 @@ import shutil
 from os import path
 
 import pytest
+from core.concept import ALL_ATTRIBUTES
 from core.sheerka.Sheerka import Sheerka
 
 from tests.BaseTest import BaseTest
@@ -27,14 +28,16 @@ class TestUsingFileBasedSheerka(BaseTest):
         os.chdir(current_pwd)
 
     def get_sheerka(self, **kwargs):
+        reset_attrs = kwargs.get("reset_attrs", True)
+        if reset_attrs:
+            ALL_ATTRIBUTES.clear()
 
+        use_dict = kwargs.get("use_dict", False)
         # use dictionary based io instead of file
         # If you do so, information between two different instances of sheerka
         #   won't be shared
-        use_dict = kwargs.get("use_dict", False)
-
         root = "mem://" if use_dict else self.root_folder
         sheerka = Sheerka()
-        sheerka.initialize(root, save_execution_context=False)
+        sheerka.initialize(root, save_execution_context=False, enable_process_return_values=False)
 
         return sheerka