v0.52.1

• Postgres 14+: Include toplevel attribute in statement statistics key
  • This could have caused statistics to be incorrect in Postgres 14+ when
    the same query was called both from within a function (toplevel=false)
    and directly (toplevel=true), with pg_stat_statements.track set to "all"
  • If affected, the issue may have shown by bogus statistics being recorded,
    for example very high call counts, since the statement stats diff would
    not have used the correct reference