v0.5.0

Bugs

• fixes supervisor dangling processes (thanks @oXis)
• doxyproxy container name cant have slashes
• wrong port displayed on doxyproxy start message when using configured
  port

Enhancements

• Configurable port for doxyproxy (thanks @oXis)
• Configurable VPN directory (thanks @oXis)
• Now works without privileged=true
• Added support for WSL2
• Docker daemons that run in VMs (windows/macos): use special hostname
  for haproxy that points to the VM IP running the daemon.
  network=host doesn't work on those environments
• Fewer default threads