Change records

Add validation to views contextual filters to expose as block context.

Core now sets views ajax history.

Some info on responsive classes for the toolbar.

Notes on the menu tree building service.

Navigation module in core.

oEmbed support.

https://oembed.com/providers.json

Some changes to the asset aggregation system.

Notes on how asset aggregation currently works in Drupal.

Change the HTML tag for views groupings.