Allow using string for EditTool empty_value
@@ -1221,7 +1221,7 @@ class EditTool(Gesture):
A custom tooltip label to override the default name.
""")
- empty_value = Either(Bool, Int, Float, Date, Datetime, Color, help="""
+ empty_value = Either(Bool, Int, Float, Date, Datetime, Color, String, help="""
Defines the value to insert on non-coordinate columns when a new
glyph is inserted into the ``ColumnDataSource`` columns, e.g. when a
circle glyph defines 'x', 'y' and 'color' columns, adding a new
