New features:
- Add pg_stat_kcache.track option, similar to pg_stat_statements (Julien
Rouhaud and github user mikecaat) - Add pg_stat_kcache.track_planning, similar to pg_stat_statements, to
track usge during planning, and maintain 2 sets of counters, depending on
whether it was during planning or execution. Requires PostgreSQL 13 or
above (Julien Rouhaud, github user mikecaat) - Add a new "top" column, and accumulate resource usage in different entries
depending on whether queries are executed at top level or at nested
statements. (github user mikecaat and Julien Rouhaud)