Merge pull request #946 from plotly/dashboard-percent

added fill_percent to params for insert, swap and remove

Author: Kully

CHANGELOG.md

@@ -3,6 +3,8 @@ All notable changes to this project will be documented in this file.
 This project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [2.5.0] - UNRELEASED
+### Added
+- New parameter `fill_percent` to the `.insert` method for the dashboards API. You can now insert a box into the dashboard layout and specify what proportion of the original container box it will occupy. Run `help(plotly.dashboard_objs.Dashboard.insert)` for more information on `fill_percent`.
 ### Updated
 - `plotly.figure_factory.create_choropleth` has changed some of the default plotting options:
   - 'offline_mode' param has been removed from call signature
@@ -681,4 +683,4 @@ it does.
   ```
 
 ### Fixed
-- The height of the graph in `iplot` respects the figure's height in layout
+- The height of the graph in `iplot` respects the figure's height in layout