v1.6

For installation instructions, see here.

What's Changed

• [1.6] Use openrvs.org/servers for the server list by @willroberts in #54
• Replaces hardcoded OpenRVS IPs with DNS names by @willroberts in #55
• Preparing for OpenRVS v1.6 by @willroberts in #57
• Updates internal OpenRVS version tag to v1.6 by @willroberts in #58

Full Changelog: v1.5...v1.6