Custom Configuration for Data Files
Previously we made it possible to customize the sidebar for your content files (i.e. .md and .html). With this update we expand that capability to data files. You can now use the sidebar settings to import other file formats (e.g. .json, .toml, .yml) and choose how they are displayed.
All new sites will have this feature enabled by default. Existing Jekyll and Hugo sites have to migrate their sites by October 16th, 2018.
We’ve rolled out an update that uses persistent SSH keys to interact with your repo. Previously, we were relying on OAuth tokens to gain access as needed, but some users were encountering problems with this method as tokens would intermittently expire before they could be refreshed. Using long-lived SSH credentials is intended to solve this problem.
We will be sunsetting token-based authentication on February 1, 2019.
More on How To Migrate Your Projects