Sort Channel#videos by most recent first

The default for YouTube is instead to sort by relevance
https://developers.google.com/youtube/v3/docs/search/list

> The order parameter specifies the method that will be used to order resources in the API response. The default value is relevance.
> Acceptable values are:
> date – Resources are sorted in reverse chronological order based on the date they were created.
> rating – Resources are sorted from highest to lowest rating.
> relevance – Resources are sorted based on their relevance to the search query. This is the default value for this parameter.
> title – Resources are sorted alphabetically by title.
> videoCount – Channels are sorted in descending order of their number of uploaded videos.
> viewCount – Resources are sorted from highest to lowest number of views.
Merge branch 'sort-videos-by-most-recent-first'