Fixed #101 : Implement PLURIAL

Fixed #103 : Implement PlurialNodeParser
Fixed #104 : Implement dynamic concept
Fixed #107 : PrepareEvalxxxEvaluator: context hints are lost on a second evaluation

tests/core/test_SheerkaConceptManager.py

@@ -1537,6 +1537,14 @@ class TestSheerkaConceptManager(TestUsingMemoryBasedSheerka):
         weights = sheerka.get_weights(BuiltinConcepts.PRECEDENCE, comparison_context=CONCEPT_COMPARISON_CONTEXT)
         assert weights == {'c:one|1001:': 2, 'c:two|1002:': 1}
 
+    def test_i_can_get_a_dynamic_concept_by_id_when_allow_dynamic(self):
+        sheerka, context, foo = self.init_concepts("foo")
+
+        dynamic_foo = sheerka.new_dynamic(foo, "SUFFIX")
+
+        assert sheerka.isinstance(sheerka.get_by_id(dynamic_foo.id), BuiltinConcepts.UNKNOWN_CONCEPT)
+        assert sheerka.isinstance(sheerka.get_by_id(dynamic_foo.id, allow_dynamic=True), foo)
+
 
 class TestSheerkaConceptManagerUsingFileBasedSheerka(TestUsingFileBasedSheerka):
     def test_i_can_add_several_concepts(self):