PoWA 4.1 is out!

[PostgreSQL Workload Analyzer](https://powa.readthedocs.io/en/latest/) is a performance tool for PostgreSQL 9.4 and newer allowing to collect, aggregate and purge statistics on multiple PostgreSQL instances from various [stats extensions](https://powa.readthedocs.io/en/latest/components/stats_extensions/index.html#stat-extensions).

[Version 4.1](https://github.com/powa-team/powa-archivist/releases/tag/REL_4_1_0) has just been released. It brings support for PostgreSQL 13, including all new fields in [pg_stat_statements 1.8](https://www.postgresql.org/docs/13/pgstatstatements.html) (planning and WAL usage statistics).

It also add support for [pg_stat_kcache](https://powa.readthedocs.io/en/latest/components/stats_extensions/pg_stat_kcache.html) [version 2.2](https://github.com/powa-team/pg_stat_kcache/releases/tag/REL2_2_0), which adds better support for nested queries and planning statistics (for PostgreSQL 13 and later).

You can see the full list of changes for each related project release:

* [powa version 4.1](https://github.com/powa-team/powa-archivist/releases/tag/REL_4_1_0)
* [pg_stat_kcache version 2.2](https://github.com/powa-team/pg_stat_kcache/releases/tag/REL2_2_0)
* [powa-collector version 1.1](https://github.com/powa-team/powa-collector/releases/tag/1.1.0)
* [powa-web version 4.1](https://github.com/powa-team/powa-web/releases/tag/4.1.0)

Thanks to Andriy Bartash, github user mikecaat and all other contributors!