On 7th of February 2018, Tom Lane committed patch: Support all SQL:2011 options for window frame clauses. This patch adds the ability to use "RANGE offset PRECEDING/FOLLOWING" frame boundaries in window functions. We'd punted on that back in the original patch to add ...

On 3rd of November, Heikki Linnakangas committed patch: Support range data types. Selectivity estimation functions are missing for some range type operators, which is a TODO. Jeff Davis

Today some guy on IRC asked question, which I didn't fully understand, but which could (probably) be summarized: how to group data into 5 minute intervals, based on some timestamp column. Well, it seems trivial (as long as you know how ...