fix: metadata in trait-cstros deprecated since traitlets-4.1

Author: ankostis

qgrid/grid.py

@@ -570,44 +570,43 @@ class can be constructed directly but that's not recommended because
     _model_module_version = Unicode('1.1.1').tag(sync=True)
 
     _df = Instance(pd.DataFrame)
-    _df_json = Unicode('', sync=True)
+    _df_json = Unicode('').tag(sync=True)
     _primary_key = List()
     _primary_key_display = Dict({})
-    _row_styles = Dict({}, sync=True)
+    _row_styles = Dict({}).tag(sync=True)
     _disable_grouping = Bool(False)
-    _columns = Dict({}, sync=True)
-    _editable_rows = Dict({}, sync=True)
+    _columns = Dict({}).tag(sync=True)
+    _editable_rows = Dict({}).tag(sync=True)
     _filter_tables = Dict({})
     _sorted_column_cache = Dict({})
-    _interval_columns = List([], sync=True)
+    _interval_columns = List([]).tag(sync=True)
     _period_columns = List([])
     _string_columns = List([])
     _sort_helper_columns = Dict({})
     _initialized = Bool(False)
     _ignore_df_changed = Bool(False)
     _unfiltered_df = Instance(pd.DataFrame)
-    _index_col_name = Unicode('qgrid_unfiltered_index', sync=True)
+    _index_col_name = Unicode('qgrid_unfiltered_index').tag(sync=True)
     _sort_col_suffix = Unicode('_qgrid_sort_column')
-    _multi_index = Bool(False, sync=True)
+    _multi_index = Bool(False).tag(sync=True)
     _edited = Bool(False)
     _selected_rows = List([])
     _viewport_range = Tuple(Integer(),
                             Integer(),
-                            default_value=(0, 100),
-                            sync=True)
-    _df_range = Tuple(Integer(), Integer(), default_value=(0, 100), sync=True)
-    _row_count = Integer(0, sync=True)
-    _sort_field = Any(None, sync=True)
-    _sort_ascending = Bool(True, sync=True)
+                            default_value=(0, 100).tag(sync=True)
+    _df_range = Tuple(Integer(), Integer(), default_value=(0, 100)).tag(sync=True)
+    _row_count = Integer(0).tag(sync=True)
+    _sort_field = Any(None).tag(sync=True)
+    _sort_ascending = Bool(True).tag(sync=True)
     _handlers = Instance(_EventHandlers)
 
     df = Instance(pd.DataFrame)
-    precision = Integer(6, sync=True)
+    precision = Integer(6).tag(sync=True)
     grid_options = Dict(sync=True)
     column_options = Dict({})
     column_definitions = Dict({})
     row_edit_callback = Instance(FunctionType, sync=False, allow_none=True)
-    show_toolbar = Bool(False, sync=True)
+    show_toolbar = Bool(False).tag(sync=True)
     id = Unicode(sync=True)
 
     def __init__(self, *args, **kwargs):