Development version
This document describes in-flight development work.
Warning
Please do not edit this file by hand (doing so will likely cause merge conflicts for other Pull Requests). Instead, create a new file in the docs/source/whatsnew/pr folder
Added a Valid widget which inherits the _Bool widget and displays a green checkmark or red cross depending on the truth of .value.
Callbacks registered with the Widget.on_some_change method are passed the Backbone model change event's arguments.
The serialization of widget traitlets can be customized. Custom serialization can use binary message buffers. Refer to :ghpull:`7757` for more information.
Code raising DeprecationWarning entered by the user in an interactive session will now display the warning by default. See :ghpull:`8480` an :ghissue:`8478`.
The --deep-reload flag and the corresponding options to inject dreload or reload into the interactive namespace have been deprecated, and will be removed in future versions. You should now explicitly import reload from IPython.lib.deepreload to use it.