Fixed #29: Parsers: Implement parsing memoization

Fixed #77 : Parser: ShortTermMemoryParser should be called separately
Fixed #78 : Remove VariableNode usage
Fixed #79 : ConceptManager: Implement compile caching
Fixed #80 : SheerkaExecute : parsers_key is not correctly computed
Fixed #81 : ValidateConceptEvaluator : Validate concept's where and pre clauses right after the parsing
Fixed #82 : SheerkaIsAManager: isa() failed when the set as a body
Fixed #83 : ValidateConceptEvaluator : Support BNF and SYA Concepts
Fixed #84 : ExpressionParser: Implement the parser as a standard parser
Fixed #85 : Services: Give order to services
Fixed #86 : cannot manage smart_get_attr(the short, color)

src/parsers/PythonParser.py

@@ -134,7 +134,7 @@ class PythonParser(BaseParserInputParser):
 
         if self.reset_parser(context, parser_input):
             source_code = parser_input.as_text(python_switcher, tracker)
-            source_code = source_code.strip()
+            source_code = source_code.lstrip()  # right side spaces must be kept
 
             #  first, try to parse an expression
             res, tree, error = self.try_parse_expression(source_code)