3.104.0

Added

• Emit a warning when the port_mapping field of the configuration contains an
  unnecessary mapping of a port to itself.

Changed

• Update syn to version 2.
  #1235

Fixed

• Fix HTTP2/1.1 translated messages dropping
  #2497
• Clean hostname/name sent to operator to fix issue of hostname with linebreaks
• Fixed a bug where two mirrord sessions could not target the same pod while
  stealing from different ports.
• Fixed typo in auto-generated docs for mirrord config.