0.6.0

This release brings a bunch of improvements and bug-fixes, and one major feature:
Letsencrypt HTTP challenge support.

New Features

• ACME (Letsencrypt) http challenge support (sni challenge is disabled due to security considerations)

Added

• iphash1 algorithm (consistent on backend removal)
• More strict check of UDP server configuration
• /ping public endpoint for healthcheck (PR #127 by Mike Schroeder)
• Support for using the Host Address (PR #123 by David Beck)
• Mentioned gowebhello as an alternative webserver (PR #137 by Shantanu Gadgil)

Fixed

• Fixed iphash algorithm. It was not working properly at all
• Fixed UDP 'session' tracking problems
• Fixed active connections underflow on backend removed and added back, but connections remain established

Changed

• Removed not necessary dependency on libacl1-dev
• Replaced missing dependencies
• Removed lxdhelpers (PR #113 by Joe Topjian)