Pure Perl HTTP proxy server

Changes for 0.0200 - 2024-01-23

• Thrall server is preferred when threads are enabled.
• Default number of workers is 50.
• Requires IO::Socket::IP.
• Requires Thrall 0.0402 and Starlight 0.0501.
• Provides cpanfile.
• Removed fatpack from the manifest.
• git.io is not used as it is obsoleted.
• Help shows options.