Make get_dict do the full access discovery like the normal access operator.

biscuit/core/templatetags/data_helpers.py

@@ -6,5 +6,14 @@ register = template.Library()
 
 
 @register.filter
-def get_dict(value: Dict[Any, Any], arg: Any) -> Any:
-    return value.get(arg, None)
+def get_dict(value: Any, arg: Any) -> Any:
+    """Gets an attribute of an object dynamically from a string name"""
+
+    if hasattr(value, str(arg)):
+        return getattr(value, arg)
+    elif hasattr(value, 'has_key') and value.has_key(arg):
+        return value[arg]
+    elif str(arg).isnumeric() and len(value) > int(arg):
+        return value[int(arg)]
+    else:
+        return None