List up the contents of the specified date range.
Copy the php file in your plugin folder.
Add meta variables FromDate and ToDate to specify the range of date, like this:
/*
Title: 2014's posts
FromDate: 2014-01-01
ToDate: 2014-12-31
*/
Then you use the Twig variables {{ pages_filtered_by_date }} and {{ latest_date }}.
Optimize.
First release.