pg_activity 3.0.0

Breaking change:

• Drop support for Python 3.6
• Attr 18.1 is required

Change log:

• Add more information to the header (instance and process stats) (Tests
  by @Krysztophe)
• Add the --refresh option to the cli to set the refresh rate (#293)
  (Requested by @crysman)
• Add the --debug-file option to enable logging (still mostly unused)
• Add hints about runtime disabled features (#300) (Reported by @rutchkiwi)
• The SUPERUSER privilege is not longer required (#277) (Requested by
  @Raymondmax)
• Replace --query-display-mode option by --wrap-query flag

Bug fixes:

• Add the --no-walreceiver to disable wal receiver stats for Aurora
  (#301) (Reported by @grutz)
• Add the --no-tempfiles option to disable temp file statistics and
  add it to the --rds command (#303) (Reported by @adityabaradwaj)
• Fix server information queries for v12/v13 (Reported and fixed by
  @kmoppel-cognite)
• Fix InvalidTextRepresentation errors (#275) (Fix proposed by
  @ssharunas)
• Fix sort order for parallel queries (#297) (Reported and fixed by
  @kmoppel-cognite)
• Doc fixes and packaging improvements (@kianmeng, @Vampouille)

Full Changelog: v2.3.1...v3.0.0