I would like to request support for pg_roaringbitmap: https://github.com/ChenHuajun/pg_roaringbitmap
Roaring bitmaps (https://roaringbitmap.org) are state-of-the-art compressed integer bitmaps offering amazing compression and performance. The format is portable, and there are implementations in all popular languages. It's already being used in a number of high-profile open source projects, e.g. Apache Lucene, Apache Hive and Yandex Clickhouse.