Fixed - Set `url_base_pathname` to `None` in `Dash.__init__`. Fix [364](https://github.com/plotly/dash/issues/364)
0.26.3
Not secure
Added - `Dash.get_asset_url` will give the prefixed url for the asset file.
Fixed - [351](https://github.com/plotly/dash/pull/351) Prefix assets files with `requests_pathname_prefix`.
0.26.2
Not secure
Fixed - [343](https://github.com/plotly/dash/pull/343) Only create the assets blueprint once for apps that provide the same flask instance to multiple dash instances.
0.26.1
Not secure
Fixed - [336](https://github.com/plotly/dash/pull/336) Fix bug in `_validate_layout` which would not let a user set `app.layout` to be a function that returns a layout [(fixes #334)](https://github.com/plotly/dash/issues/334).
0.26.0
Not secure
Added - [318](https://github.com/plotly/dash/pull/318) Add `assets_ignore` init keyword, regex filter for the assets files.
0.25.1
Not secure
Fixed - [335](https://github.com/plotly/dash/pull/335) Ensure CSS/JS external resources are loaded before the assets.