feat: basic support for displaying version history

this is not terribly feature-rich yet, just the basics

tests/grids/test_filters.py

@@ -576,10 +576,6 @@ class TestDateAlchemyFilter(WebTestCase):
 
     def setUp(self):
         self.setup_web()
-        model = self.app.model
-
-        # nb. create table for TheLocalThing
-        model.Base.metadata.create_all(bind=self.session.bind)
 
         self.sample_data = [
             {"id": 1, "date": datetime.date(2024, 1, 1)},