v0.38.0

• Update to pg_query 2.0 and Postgres 13 parser
  • This is a major upgrade in terms of supported syntax (Postgres 10 to 13),
    as well as a major change in the fingerprints, which are now shorter and
    not compatible with the old format.
  • When you upgrade to this version of the collector you will see a break
    in statistics, that is, you will see new query entries in pganalyze after
    adopting this version of the collector.
• Amazon RDS: Support long log events beyond 2,000 lines
  • Resolves edge cases where very long EXPLAIN plans would be ignored since
    they exceeded the previous 2,000 limit
  • We now ensure that we go back up to 10 MB in the file with each log
    download that happens, with support for log events that exceed the RDS API
    page size limit of 10,000 log lines
• Self-managed: Also check for the process name "postmaster" when looking for
  Postgres PID (fixes data directory detection for RHEL-based systems)